drivers/infiniband/hw/mlx5/qp.c

   1 /*
   2  * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <linux/module.h>
  34 #include <rdma/ib_umem.h>
  35 #include <rdma/ib_cache.h>
  36 #include <rdma/ib_user_verbs.h>
  37 #include "mlx5_ib.h"
  38 #include "user.h"
  39
  40 /* not supported currently */
  41 static int wq_signature;
  42
  43 enum {
  44         MLX5_IB_ACK_REQ_FREQ    = 8,
  45 };
  46
  47 enum {
  48         MLX5_IB_DEFAULT_SCHED_QUEUE     = 0x83,
  49         MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f,
  50         MLX5_IB_LINK_TYPE_IB            = 0,
  51         MLX5_IB_LINK_TYPE_ETH           = 1
  52 };
  53
  54 enum {
  55         MLX5_IB_SQ_STRIDE       = 6,
  56         MLX5_IB_CACHE_LINE_SIZE = 64,
  57 };
  58
  59 static const u32 mlx5_ib_opcode[] = {
  60         [IB_WR_SEND]                            = MLX5_OPCODE_SEND,
  61         [IB_WR_LSO]                             = MLX5_OPCODE_LSO,
  62         [IB_WR_SEND_WITH_IMM]                   = MLX5_OPCODE_SEND_IMM,
  63         [IB_WR_RDMA_WRITE]                      = MLX5_OPCODE_RDMA_WRITE,
  64         [IB_WR_RDMA_WRITE_WITH_IMM]             = MLX5_OPCODE_RDMA_WRITE_IMM,
  65         [IB_WR_RDMA_READ]                       = MLX5_OPCODE_RDMA_READ,
  66         [IB_WR_ATOMIC_CMP_AND_SWP]              = MLX5_OPCODE_ATOMIC_CS,
  67         [IB_WR_ATOMIC_FETCH_AND_ADD]            = MLX5_OPCODE_ATOMIC_FA,
  68         [IB_WR_SEND_WITH_INV]                   = MLX5_OPCODE_SEND_INVAL,
  69         [IB_WR_LOCAL_INV]                       = MLX5_OPCODE_UMR,
  70         [IB_WR_REG_MR]                          = MLX5_OPCODE_UMR,
  71         [IB_WR_MASKED_ATOMIC_CMP_AND_SWP]       = MLX5_OPCODE_ATOMIC_MASKED_CS,
  72         [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD]     = MLX5_OPCODE_ATOMIC_MASKED_FA,
  73         [MLX5_IB_WR_UMR]                        = MLX5_OPCODE_UMR,
  74 };
  75
  76 struct mlx5_wqe_eth_pad {
  77         u8 rsvd0[16];
  78 };
  79
  80 static void get_cqs(enum ib_qp_type qp_type,
  81                     struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
  82                     struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq);
  83
  84 static int is_qp0(enum ib_qp_type qp_type)
  85 {
  86         return qp_type == IB_QPT_SMI;
  87 }
  88
  89 static int is_sqp(enum ib_qp_type qp_type)
  90 {
  91         return is_qp0(qp_type) || is_qp1(qp_type);
  92 }
  93
  94 static void *get_wqe(struct mlx5_ib_qp *qp, int offset)
  95 {
  96         return mlx5_buf_offset(&qp->buf, offset);
  97 }
  98
  99 static void *get_recv_wqe(struct mlx5_ib_qp *qp, int n)
 100 {
 101         return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift));
 102 }
 103
 104 void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n)
 105 {
 106         return get_wqe(qp, qp->sq.offset + (n << MLX5_IB_SQ_STRIDE));
 107 }
 108
 109 /**
 110  * mlx5_ib_read_user_wqe() - Copy a user-space WQE to kernel space.
 111  *
 112  * @qp: QP to copy from.
 113  * @send: copy from the send queue when non-zero, use the receive queue
 114  *        otherwise.
 115  * @wqe_index:  index to start copying from. For send work queues, the
 116  *              wqe_index is in units of MLX5_SEND_WQE_BB.
 117  *              For receive work queue, it is the number of work queue
 118  *              element in the queue.
 119  * @buffer: destination buffer.
 120  * @length: maximum number of bytes to copy.
 121  *
 122  * Copies at least a single WQE, but may copy more data.
 123  *
 124  * Return: the number of bytes copied, or an error code.
 125  */
 126 int mlx5_ib_read_user_wqe(struct mlx5_ib_qp *qp, int send, int wqe_index,
 127                           void *buffer, u32 length,
 128                           struct mlx5_ib_qp_base *base)
 129 {
 130         struct ib_device *ibdev = qp->ibqp.device;
 131         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 132         struct mlx5_ib_wq *wq = send ? &qp->sq : &qp->rq;
 133         size_t offset;
 134         size_t wq_end;
 135         struct ib_umem *umem = base->ubuffer.umem;
 136         u32 first_copy_length;
 137         int wqe_length;
 138         int ret;
 139
 140         if (wq->wqe_cnt == 0) {
 141                 mlx5_ib_dbg(dev, "mlx5_ib_read_user_wqe for a QP with wqe_cnt == 0. qp_type: 0x%x\n",
 142                             qp->ibqp.qp_type);
 143                 return -EINVAL;
 144         }
 145
 146         offset = wq->offset + ((wqe_index % wq->wqe_cnt) << wq->wqe_shift);
 147         wq_end = wq->offset + (wq->wqe_cnt << wq->wqe_shift);
 148
 149         if (send && length < sizeof(struct mlx5_wqe_ctrl_seg))
 150                 return -EINVAL;
 151
 152         if (offset > umem->length ||
 153             (send && offset + sizeof(struct mlx5_wqe_ctrl_seg) > umem->length))
 154                 return -EINVAL;
 155
 156         first_copy_length = min_t(u32, offset + length, wq_end) - offset;
 157         ret = ib_umem_copy_from(buffer, umem, offset, first_copy_length);
 158         if (ret)
 159                 return ret;
 160
 161         if (send) {
 162                 struct mlx5_wqe_ctrl_seg *ctrl = buffer;
 163                 int ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK;
 164
 165                 wqe_length = ds * MLX5_WQE_DS_UNITS;
 166         } else {
 167                 wqe_length = 1 << wq->wqe_shift;
 168         }
 169
 170         if (wqe_length <= first_copy_length)
 171                 return first_copy_length;
 172
 173         ret = ib_umem_copy_from(buffer + first_copy_length, umem, wq->offset,
 174                                 wqe_length - first_copy_length);
 175         if (ret)
 176                 return ret;
 177
 178         return wqe_length;
 179 }
 180
 181 static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type)
 182 {
 183         struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
 184         struct ib_event event;
 185
 186         if (type == MLX5_EVENT_TYPE_PATH_MIG) {
 187                 /* This event is only valid for trans_qps */
 188                 to_mibqp(qp)->port = to_mibqp(qp)->trans_qp.alt_port;
 189         }
 190
 191         if (ibqp->event_handler) {
 192                 event.device     = ibqp->device;
 193                 event.element.qp = ibqp;
 194                 switch (type) {
 195                 case MLX5_EVENT_TYPE_PATH_MIG:
 196                         event.event = IB_EVENT_PATH_MIG;
 197                         break;
 198                 case MLX5_EVENT_TYPE_COMM_EST:
 199                         event.event = IB_EVENT_COMM_EST;
 200                         break;
 201                 case MLX5_EVENT_TYPE_SQ_DRAINED:
 202                         event.event = IB_EVENT_SQ_DRAINED;
 203                         break;
 204                 case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
 205                         event.event = IB_EVENT_QP_LAST_WQE_REACHED;
 206                         break;
 207                 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
 208                         event.event = IB_EVENT_QP_FATAL;
 209                         break;
 210                 case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
 211                         event.event = IB_EVENT_PATH_MIG_ERR;
 212                         break;
 213                 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
 214                         event.event = IB_EVENT_QP_REQ_ERR;
 215                         break;
 216                 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
 217                         event.event = IB_EVENT_QP_ACCESS_ERR;
 218                         break;
 219                 default:
 220                         pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn);
 221                         return;
 222                 }
 223
 224                 ibqp->event_handler(&event, ibqp->qp_context);
 225         }
 226 }
 227
 228 static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
 229                        int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd)
 230 {
 231         int wqe_size;
 232         int wq_size;
 233
 234         /* Sanity check RQ size before proceeding */
 235         if (cap->max_recv_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz)))
 236                 return -EINVAL;
 237
 238         if (!has_rq) {
 239                 qp->rq.max_gs = 0;
 240                 qp->rq.wqe_cnt = 0;
 241                 qp->rq.wqe_shift = 0;
 242                 cap->max_recv_wr = 0;
 243                 cap->max_recv_sge = 0;
 244         } else {
 245                 if (ucmd) {
 246                         qp->rq.wqe_cnt = ucmd->rq_wqe_count;
 247                         qp->rq.wqe_shift = ucmd->rq_wqe_shift;
 248                         qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
 249                         qp->rq.max_post = qp->rq.wqe_cnt;
 250                 } else {
 251                         wqe_size = qp->wq_sig ? sizeof(struct mlx5_wqe_signature_seg) : 0;
 252                         wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg);
 253                         wqe_size = roundup_pow_of_two(wqe_size);
 254                         wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size;
 255                         wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB);
 256                         qp->rq.wqe_cnt = wq_size / wqe_size;
 257                         if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq)) {
 258                                 mlx5_ib_dbg(dev, "wqe_size %d, max %d\n",
 259                                             wqe_size,
 260                                             MLX5_CAP_GEN(dev->mdev,
 261                                                          max_wqe_sz_rq));
 262                                 return -EINVAL;
 263                         }
 264                         qp->rq.wqe_shift = ilog2(wqe_size);
 265                         qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
 266                         qp->rq.max_post = qp->rq.wqe_cnt;
 267                 }
 268         }
 269
 270         return 0;
 271 }
 272
 273 static int sq_overhead(struct ib_qp_init_attr *attr)
 274 {
 275         int size = 0;
 276
 277         switch (attr->qp_type) {
 278         case IB_QPT_XRC_INI:
 279                 size += sizeof(struct mlx5_wqe_xrc_seg);
 280                 /* fall through */
 281         case IB_QPT_RC:
 282                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 283                         max(sizeof(struct mlx5_wqe_atomic_seg) +
 284                             sizeof(struct mlx5_wqe_raddr_seg),
 285                             sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 286                             sizeof(struct mlx5_mkey_seg));
 287                 break;
 288
 289         case IB_QPT_XRC_TGT:
 290                 return 0;
 291
 292         case IB_QPT_UC:
 293                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 294                         max(sizeof(struct mlx5_wqe_raddr_seg),
 295                             sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 296                             sizeof(struct mlx5_mkey_seg));
 297                 break;
 298
 299         case IB_QPT_UD:
 300                 if (attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)
 301                         size += sizeof(struct mlx5_wqe_eth_pad) +
 302                                 sizeof(struct mlx5_wqe_eth_seg);
 303                 /* fall through */
 304         case IB_QPT_SMI:
 305         case MLX5_IB_QPT_HW_GSI:
 306                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 307                         sizeof(struct mlx5_wqe_datagram_seg);
 308                 break;
 309
 310         case MLX5_IB_QPT_REG_UMR:
 311                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 312                         sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 313                         sizeof(struct mlx5_mkey_seg);
 314                 break;
 315
 316         default:
 317                 return -EINVAL;
 318         }
 319
 320         return size;
 321 }
 322
 323 static int calc_send_wqe(struct ib_qp_init_attr *attr)
 324 {
 325         int inl_size = 0;
 326         int size;
 327
 328         size = sq_overhead(attr);
 329         if (size < 0)
 330                 return size;
 331
 332         if (attr->cap.max_inline_data) {
 333                 inl_size = size + sizeof(struct mlx5_wqe_inline_seg) +
 334                         attr->cap.max_inline_data;
 335         }
 336
 337         size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg);
 338         if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN &&
 339             ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB) < MLX5_SIG_WQE_SIZE)
 340                         return MLX5_SIG_WQE_SIZE;
 341         else
 342                 return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
 343 }
 344
 345 static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
 346                         struct mlx5_ib_qp *qp)
 347 {
 348         int wqe_size;
 349         int wq_size;
 350
 351         if (!attr->cap.max_send_wr)
 352                 return 0;
 353
 354         wqe_size = calc_send_wqe(attr);
 355         mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size);
 356         if (wqe_size < 0)
 357                 return wqe_size;
 358
 359         if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
 360                 mlx5_ib_dbg(dev, "wqe_size(%d) > max_sq_desc_sz(%d)\n",
 361                             wqe_size, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
 362                 return -EINVAL;
 363         }
 364
 365         qp->max_inline_data = wqe_size - sq_overhead(attr) -
 366                               sizeof(struct mlx5_wqe_inline_seg);
 367         attr->cap.max_inline_data = qp->max_inline_data;
 368
 369         if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN)
 370                 qp->signature_en = true;
 371
 372         wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size);
 373         qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB;
 374         if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
 375                 mlx5_ib_dbg(dev, "wqe count(%d) exceeds limits(%d)\n",
 376                             qp->sq.wqe_cnt,
 377                             1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
 378                 return -ENOMEM;
 379         }
 380         qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
 381         qp->sq.max_gs = attr->cap.max_send_sge;
 382         qp->sq.max_post = wq_size / wqe_size;
 383         attr->cap.max_send_wr = qp->sq.max_post;
 384
 385         return wq_size;
 386 }
 387
 388 static int set_user_buf_size(struct mlx5_ib_dev *dev,
 389                             struct mlx5_ib_qp *qp,
 390                             struct mlx5_ib_create_qp *ucmd,
 391                             struct mlx5_ib_qp_base *base,
 392                             struct ib_qp_init_attr *attr)
 393 {
 394         int desc_sz = 1 << qp->sq.wqe_shift;
 395
 396         if (desc_sz > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
 397                 mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n",
 398                              desc_sz, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
 399                 return -EINVAL;
 400         }
 401
 402         if (ucmd->sq_wqe_count && ((1 << ilog2(ucmd->sq_wqe_count)) != ucmd->sq_wqe_count)) {
 403                 mlx5_ib_warn(dev, "sq_wqe_count %d, sq_wqe_count %d\n",
 404                              ucmd->sq_wqe_count, ucmd->sq_wqe_count);
 405                 return -EINVAL;
 406         }
 407
 408         qp->sq.wqe_cnt = ucmd->sq_wqe_count;
 409
 410         if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
 411                 mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n",
 412                              qp->sq.wqe_cnt,
 413                              1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
 414                 return -EINVAL;
 415         }
 416
 417         if (attr->qp_type == IB_QPT_RAW_PACKET) {
 418                 base->ubuffer.buf_size = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 419                 qp->raw_packet_qp.sq.ubuffer.buf_size = qp->sq.wqe_cnt << 6;
 420         } else {
 421                 base->ubuffer.buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
 422                                          (qp->sq.wqe_cnt << 6);
 423         }
 424
 425         return 0;
 426 }
 427
 428 static int qp_has_rq(struct ib_qp_init_attr *attr)
 429 {
 430         if (attr->qp_type == IB_QPT_XRC_INI ||
 431             attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
 432             attr->qp_type == MLX5_IB_QPT_REG_UMR ||
 433             !attr->cap.max_recv_wr)
 434                 return 0;
 435
 436         return 1;
 437 }
 438
 439 static int first_med_uuar(void)
 440 {
 441         return 1;
 442 }
 443
 444 static int next_uuar(int n)
 445 {
 446         n++;
 447
 448         while (((n % 4) & 2))
 449                 n++;
 450
 451         return n;
 452 }
 453
 454 static int num_med_uuar(struct mlx5_uuar_info *uuari)
 455 {
 456         int n;
 457
 458         n = uuari->num_uars * MLX5_NON_FP_BF_REGS_PER_PAGE -
 459                 uuari->num_low_latency_uuars - 1;
 460
 461         return n >= 0 ? n : 0;
 462 }
 463
 464 static int max_uuari(struct mlx5_uuar_info *uuari)
 465 {
 466         return uuari->num_uars * 4;
 467 }
 468
 469 static int first_hi_uuar(struct mlx5_uuar_info *uuari)
 470 {
 471         int med;
 472         int i;
 473         int t;
 474
 475         med = num_med_uuar(uuari);
 476         for (t = 0, i = first_med_uuar();; i = next_uuar(i)) {
 477                 t++;
 478                 if (t == med)
 479                         return next_uuar(i);
 480         }
 481
 482         return 0;
 483 }
 484
 485 static int alloc_high_class_uuar(struct mlx5_uuar_info *uuari)
 486 {
 487         int i;
 488
 489         for (i = first_hi_uuar(uuari); i < max_uuari(uuari); i = next_uuar(i)) {
 490                 if (!test_bit(i, uuari->bitmap)) {
 491                         set_bit(i, uuari->bitmap);
 492                         uuari->count[i]++;
 493                         return i;
 494                 }
 495         }
 496
 497         return -ENOMEM;
 498 }
 499
 500 static int alloc_med_class_uuar(struct mlx5_uuar_info *uuari)
 501 {
 502         int minidx = first_med_uuar();
 503         int i;
 504
 505         for (i = first_med_uuar(); i < first_hi_uuar(uuari); i = next_uuar(i)) {
 506                 if (uuari->count[i] < uuari->count[minidx])
 507                         minidx = i;
 508         }
 509
 510         uuari->count[minidx]++;
 511         return minidx;
 512 }
 513
 514 static int alloc_uuar(struct mlx5_uuar_info *uuari,
 515                       enum mlx5_ib_latency_class lat)
 516 {
 517         int uuarn = -EINVAL;
 518
 519         mutex_lock(&uuari->lock);
 520         switch (lat) {
 521         case MLX5_IB_LATENCY_CLASS_LOW:
 522                 uuarn = 0;
 523                 uuari->count[uuarn]++;
 524                 break;
 525
 526         case MLX5_IB_LATENCY_CLASS_MEDIUM:
 527                 if (uuari->ver < 2)
 528                         uuarn = -ENOMEM;
 529                 else
 530                         uuarn = alloc_med_class_uuar(uuari);
 531                 break;
 532
 533         case MLX5_IB_LATENCY_CLASS_HIGH:
 534                 if (uuari->ver < 2)
 535                         uuarn = -ENOMEM;
 536                 else
 537                         uuarn = alloc_high_class_uuar(uuari);
 538                 break;
 539
 540         case MLX5_IB_LATENCY_CLASS_FAST_PATH:
 541                 uuarn = 2;
 542                 break;
 543         }
 544         mutex_unlock(&uuari->lock);
 545
 546         return uuarn;
 547 }
 548
 549 static void free_med_class_uuar(struct mlx5_uuar_info *uuari, int uuarn)
 550 {
 551         clear_bit(uuarn, uuari->bitmap);
 552         --uuari->count[uuarn];
 553 }
 554
 555 static void free_high_class_uuar(struct mlx5_uuar_info *uuari, int uuarn)
 556 {
 557         clear_bit(uuarn, uuari->bitmap);
 558         --uuari->count[uuarn];
 559 }
 560
 561 static void free_uuar(struct mlx5_uuar_info *uuari, int uuarn)
 562 {
 563         int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE;
 564         int high_uuar = nuuars - uuari->num_low_latency_uuars;
 565
 566         mutex_lock(&uuari->lock);
 567         if (uuarn == 0) {
 568                 --uuari->count[uuarn];
 569                 goto out;
 570         }
 571
 572         if (uuarn < high_uuar) {
 573                 free_med_class_uuar(uuari, uuarn);
 574                 goto out;
 575         }
 576
 577         free_high_class_uuar(uuari, uuarn);
 578
 579 out:
 580         mutex_unlock(&uuari->lock);
 581 }
 582
 583 static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state)
 584 {
 585         switch (state) {
 586         case IB_QPS_RESET:      return MLX5_QP_STATE_RST;
 587         case IB_QPS_INIT:       return MLX5_QP_STATE_INIT;
 588         case IB_QPS_RTR:        return MLX5_QP_STATE_RTR;
 589         case IB_QPS_RTS:        return MLX5_QP_STATE_RTS;
 590         case IB_QPS_SQD:        return MLX5_QP_STATE_SQD;
 591         case IB_QPS_SQE:        return MLX5_QP_STATE_SQER;
 592         case IB_QPS_ERR:        return MLX5_QP_STATE_ERR;
 593         default:                return -1;
 594         }
 595 }
 596
 597 static int to_mlx5_st(enum ib_qp_type type)
 598 {
 599         switch (type) {
 600         case IB_QPT_RC:                 return MLX5_QP_ST_RC;
 601         case IB_QPT_UC:                 return MLX5_QP_ST_UC;
 602         case IB_QPT_UD:                 return MLX5_QP_ST_UD;
 603         case MLX5_IB_QPT_REG_UMR:       return MLX5_QP_ST_REG_UMR;
 604         case IB_QPT_XRC_INI:
 605         case IB_QPT_XRC_TGT:            return MLX5_QP_ST_XRC;
 606         case IB_QPT_SMI:                return MLX5_QP_ST_QP0;
 607         case MLX5_IB_QPT_HW_GSI:        return MLX5_QP_ST_QP1;
 608         case IB_QPT_RAW_IPV6:           return MLX5_QP_ST_RAW_IPV6;
 609         case IB_QPT_RAW_PACKET:
 610         case IB_QPT_RAW_ETHERTYPE:      return MLX5_QP_ST_RAW_ETHERTYPE;
 611         case IB_QPT_MAX:
 612         default:                return -EINVAL;
 613         }
 614 }
 615
 616 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq,
 617                              struct mlx5_ib_cq *recv_cq);
 618 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq,
 619                                struct mlx5_ib_cq *recv_cq);
 620
 621 static int uuarn_to_uar_index(struct mlx5_uuar_info *uuari, int uuarn)
 622 {
 623         return uuari->uars[uuarn / MLX5_BF_REGS_PER_PAGE].index;
 624 }
 625
 626 static int mlx5_ib_umem_get(struct mlx5_ib_dev *dev,
 627                             struct ib_pd *pd,
 628                             unsigned long addr, size_t size,
 629                             struct ib_umem **umem,
 630                             int *npages, int *page_shift, int *ncont,
 631                             u32 *offset)
 632 {
 633         int err;
 634
 635         *umem = ib_umem_get(pd->uobject->context, addr, size, 0, 0);
 636         if (IS_ERR(*umem)) {
 637                 mlx5_ib_dbg(dev, "umem_get failed\n");
 638                 return PTR_ERR(*umem);
 639         }
 640
 641         mlx5_ib_cont_pages(*umem, addr, npages, page_shift, ncont, NULL);
 642
 643         err = mlx5_ib_get_buf_offset(addr, *page_shift, offset);
 644         if (err) {
 645                 mlx5_ib_warn(dev, "bad offset\n");
 646                 goto err_umem;
 647         }
 648
 649         mlx5_ib_dbg(dev, "addr 0x%lx, size %zu, npages %d, page_shift %d, ncont %d, offset %d\n",
 650                     addr, size, *npages, *page_shift, *ncont, *offset);
 651
 652         return 0;
 653
 654 err_umem:
 655         ib_umem_release(*umem);
 656         *umem = NULL;
 657
 658         return err;
 659 }
 660
 661 static void destroy_user_rq(struct ib_pd *pd, struct mlx5_ib_rwq *rwq)
 662 {
 663         struct mlx5_ib_ucontext *context;
 664
 665         context = to_mucontext(pd->uobject->context);
 666         mlx5_ib_db_unmap_user(context, &rwq->db);
 667         if (rwq->umem)
 668                 ib_umem_release(rwq->umem);
 669 }
 670
 671 static int create_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 672                           struct mlx5_ib_rwq *rwq,
 673                           struct mlx5_ib_create_wq *ucmd)
 674 {
 675         struct mlx5_ib_ucontext *context;
 676         int page_shift = 0;
 677         int npages;
 678         u32 offset = 0;
 679         int ncont = 0;
 680         int err;
 681
 682         if (!ucmd->buf_addr)
 683                 return -EINVAL;
 684
 685         context = to_mucontext(pd->uobject->context);
 686         rwq->umem = ib_umem_get(pd->uobject->context, ucmd->buf_addr,
 687                                rwq->buf_size, 0, 0);
 688         if (IS_ERR(rwq->umem)) {
 689                 mlx5_ib_dbg(dev, "umem_get failed\n");
 690                 err = PTR_ERR(rwq->umem);
 691                 return err;
 692         }
 693
 694         mlx5_ib_cont_pages(rwq->umem, ucmd->buf_addr, &npages, &page_shift,
 695                            &ncont, NULL);
 696         err = mlx5_ib_get_buf_offset(ucmd->buf_addr, page_shift,
 697                                      &rwq->rq_page_offset);
 698         if (err) {
 699                 mlx5_ib_warn(dev, "bad offset\n");
 700                 goto err_umem;
 701         }
 702
 703         rwq->rq_num_pas = ncont;
 704         rwq->page_shift = page_shift;
 705         rwq->log_page_size =  page_shift - MLX5_ADAPTER_PAGE_SHIFT;
 706         rwq->wq_sig = !!(ucmd->flags & MLX5_WQ_FLAG_SIGNATURE);
 707
 708         mlx5_ib_dbg(dev, "addr 0x%llx, size %zd, npages %d, page_shift %d, ncont %d, offset %d\n",
 709                     (unsigned long long)ucmd->buf_addr, rwq->buf_size,
 710                     npages, page_shift, ncont, offset);
 711
 712         err = mlx5_ib_db_map_user(context, ucmd->db_addr, &rwq->db);
 713         if (err) {
 714                 mlx5_ib_dbg(dev, "map failed\n");
 715                 goto err_umem;
 716         }
 717
 718         rwq->create_type = MLX5_WQ_USER;
 719         return 0;
 720
 721 err_umem:
 722         ib_umem_release(rwq->umem);
 723         return err;
 724 }
 725
 726 static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 727                           struct mlx5_ib_qp *qp, struct ib_udata *udata,
 728                           struct ib_qp_init_attr *attr,
 729                           struct mlx5_create_qp_mbox_in **in,
 730                           struct mlx5_ib_create_qp_resp *resp, int *inlen,
 731                           struct mlx5_ib_qp_base *base)
 732 {
 733         struct mlx5_ib_ucontext *context;
 734         struct mlx5_ib_create_qp ucmd;
 735         struct mlx5_ib_ubuffer *ubuffer = &base->ubuffer;
 736         int page_shift = 0;
 737         int uar_index;
 738         int npages;
 739         u32 offset = 0;
 740         int uuarn;
 741         int ncont = 0;
 742         int err;
 743
 744         err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
 745         if (err) {
 746                 mlx5_ib_dbg(dev, "copy failed\n");
 747                 return err;
 748         }
 749
 750         context = to_mucontext(pd->uobject->context);
 751         /*
 752          * TBD: should come from the verbs when we have the API
 753          */
 754         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
 755                 /* In CROSS_CHANNEL CQ and QP must use the same UAR */
 756                 uuarn = MLX5_CROSS_CHANNEL_UUAR;
 757         else {
 758                 uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_HIGH);
 759                 if (uuarn < 0) {
 760                         mlx5_ib_dbg(dev, "failed to allocate low latency UUAR\n");
 761                         mlx5_ib_dbg(dev, "reverting to medium latency\n");
 762                         uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_MEDIUM);
 763                         if (uuarn < 0) {
 764                                 mlx5_ib_dbg(dev, "failed to allocate medium latency UUAR\n");
 765                                 mlx5_ib_dbg(dev, "reverting to high latency\n");
 766                                 uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_LOW);
 767                                 if (uuarn < 0) {
 768                                         mlx5_ib_warn(dev, "uuar allocation failed\n");
 769                                         return uuarn;
 770                                 }
 771                         }
 772                 }
 773         }
 774
 775         uar_index = uuarn_to_uar_index(&context->uuari, uuarn);
 776         mlx5_ib_dbg(dev, "uuarn 0x%x, uar_index 0x%x\n", uuarn, uar_index);
 777
 778         qp->rq.offset = 0;
 779         qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
 780         qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 781
 782         err = set_user_buf_size(dev, qp, &ucmd, base, attr);
 783         if (err)
 784                 goto err_uuar;
 785
 786         if (ucmd.buf_addr && ubuffer->buf_size) {
 787                 ubuffer->buf_addr = ucmd.buf_addr;
 788                 err = mlx5_ib_umem_get(dev, pd, ubuffer->buf_addr,
 789                                        ubuffer->buf_size,
 790                                        &ubuffer->umem, &npages, &page_shift,
 791                                        &ncont, &offset);
 792                 if (err)
 793                         goto err_uuar;
 794         } else {
 795                 ubuffer->umem = NULL;
 796         }
 797
 798         *inlen = sizeof(**in) + sizeof(*(*in)->pas) * ncont;
 799         *in = mlx5_vzalloc(*inlen);
 800         if (!*in) {
 801                 err = -ENOMEM;
 802                 goto err_umem;
 803         }
 804         if (ubuffer->umem)
 805                 mlx5_ib_populate_pas(dev, ubuffer->umem, page_shift,
 806                                      (*in)->pas, 0);
 807         (*in)->ctx.log_pg_sz_remote_qpn =
 808                 cpu_to_be32((page_shift - MLX5_ADAPTER_PAGE_SHIFT) << 24);
 809         (*in)->ctx.params2 = cpu_to_be32(offset << 6);
 810
 811         (*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index);
 812         resp->uuar_index = uuarn;
 813         qp->uuarn = uuarn;
 814
 815         err = mlx5_ib_db_map_user(context, ucmd.db_addr, &qp->db);
 816         if (err) {
 817                 mlx5_ib_dbg(dev, "map failed\n");
 818                 goto err_free;
 819         }
 820
 821         err = ib_copy_to_udata(udata, resp, sizeof(*resp));
 822         if (err) {
 823                 mlx5_ib_dbg(dev, "copy failed\n");
 824                 goto err_unmap;
 825         }
 826         qp->create_type = MLX5_QP_USER;
 827
 828         return 0;
 829
 830 err_unmap:
 831         mlx5_ib_db_unmap_user(context, &qp->db);
 832
 833 err_free:
 834         kvfree(*in);
 835
 836 err_umem:
 837         if (ubuffer->umem)
 838                 ib_umem_release(ubuffer->umem);
 839
 840 err_uuar:
 841         free_uuar(&context->uuari, uuarn);
 842         return err;
 843 }
 844
 845 static void destroy_qp_user(struct ib_pd *pd, struct mlx5_ib_qp *qp,
 846                             struct mlx5_ib_qp_base *base)
 847 {
 848         struct mlx5_ib_ucontext *context;
 849
 850         context = to_mucontext(pd->uobject->context);
 851         mlx5_ib_db_unmap_user(context, &qp->db);
 852         if (base->ubuffer.umem)
 853                 ib_umem_release(base->ubuffer.umem);
 854         free_uuar(&context->uuari, qp->uuarn);
 855 }
 856
 857 static int create_kernel_qp(struct mlx5_ib_dev *dev,
 858                             struct ib_qp_init_attr *init_attr,
 859                             struct mlx5_ib_qp *qp,
 860                             struct mlx5_create_qp_mbox_in **in, int *inlen,
 861                             struct mlx5_ib_qp_base *base)
 862 {
 863         enum mlx5_ib_latency_class lc = MLX5_IB_LATENCY_CLASS_LOW;
 864         struct mlx5_uuar_info *uuari;
 865         int uar_index;
 866         int uuarn;
 867         int err;
 868
 869         uuari = &dev->mdev->priv.uuari;
 870         if (init_attr->create_flags & ~(IB_QP_CREATE_SIGNATURE_EN |
 871                                         IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
 872                                         IB_QP_CREATE_IPOIB_UD_LSO |
 873                                         mlx5_ib_create_qp_sqpn_qp1()))
 874                 return -EINVAL;
 875
 876         if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
 877                 lc = MLX5_IB_LATENCY_CLASS_FAST_PATH;
 878
 879         uuarn = alloc_uuar(uuari, lc);
 880         if (uuarn < 0) {
 881                 mlx5_ib_dbg(dev, "\n");
 882                 return -ENOMEM;
 883         }
 884
 885         qp->bf = &uuari->bfs[uuarn];
 886         uar_index = qp->bf->uar->index;
 887
 888         err = calc_sq_size(dev, init_attr, qp);
 889         if (err < 0) {
 890                 mlx5_ib_dbg(dev, "err %d\n", err);
 891                 goto err_uuar;
 892         }
 893
 894         qp->rq.offset = 0;
 895         qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 896         base->ubuffer.buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift);
 897
 898         err = mlx5_buf_alloc(dev->mdev, base->ubuffer.buf_size, &qp->buf);
 899         if (err) {
 900                 mlx5_ib_dbg(dev, "err %d\n", err);
 901                 goto err_uuar;
 902         }
 903
 904         qp->sq.qend = mlx5_get_send_wqe(qp, qp->sq.wqe_cnt);
 905         *inlen = sizeof(**in) + sizeof(*(*in)->pas) * qp->buf.npages;
 906         *in = mlx5_vzalloc(*inlen);
 907         if (!*in) {
 908                 err = -ENOMEM;
 909                 goto err_buf;
 910         }
 911         (*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index);
 912         (*in)->ctx.log_pg_sz_remote_qpn =
 913                 cpu_to_be32((qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT) << 24);
 914         /* Set "fast registration enabled" for all kernel QPs */
 915         (*in)->ctx.params1 |= cpu_to_be32(1 << 11);
 916         (*in)->ctx.sq_crq_size |= cpu_to_be16(1 << 4);
 917
 918         if (init_attr->create_flags & mlx5_ib_create_qp_sqpn_qp1()) {
 919                 (*in)->ctx.deth_sqpn = cpu_to_be32(1);
 920                 qp->flags |= MLX5_IB_QP_SQPN_QP1;
 921         }
 922
 923         mlx5_fill_page_array(&qp->buf, (*in)->pas);
 924
 925         err = mlx5_db_alloc(dev->mdev, &qp->db);
 926         if (err) {
 927                 mlx5_ib_dbg(dev, "err %d\n", err);
 928                 goto err_free;
 929         }
 930
 931         qp->sq.wrid = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wrid), GFP_KERNEL);
 932         qp->sq.wr_data = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wr_data), GFP_KERNEL);
 933         qp->rq.wrid = kmalloc(qp->rq.wqe_cnt * sizeof(*qp->rq.wrid), GFP_KERNEL);
 934         qp->sq.w_list = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.w_list), GFP_KERNEL);
 935         qp->sq.wqe_head = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wqe_head), GFP_KERNEL);
 936
 937         if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
 938             !qp->sq.w_list || !qp->sq.wqe_head) {
 939                 err = -ENOMEM;
 940                 goto err_wrid;
 941         }
 942         qp->create_type = MLX5_QP_KERNEL;
 943
 944         return 0;
 945
 946 err_wrid:
 947         mlx5_db_free(dev->mdev, &qp->db);
 948         kfree(qp->sq.wqe_head);
 949         kfree(qp->sq.w_list);
 950         kfree(qp->sq.wrid);
 951         kfree(qp->sq.wr_data);
 952         kfree(qp->rq.wrid);
 953
 954 err_free:
 955         kvfree(*in);
 956
 957 err_buf:
 958         mlx5_buf_free(dev->mdev, &qp->buf);
 959
 960 err_uuar:
 961         free_uuar(&dev->mdev->priv.uuari, uuarn);
 962         return err;
 963 }
 964
 965 static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
 966 {
 967         mlx5_db_free(dev->mdev, &qp->db);
 968         kfree(qp->sq.wqe_head);
 969         kfree(qp->sq.w_list);
 970         kfree(qp->sq.wrid);
 971         kfree(qp->sq.wr_data);
 972         kfree(qp->rq.wrid);
 973         mlx5_buf_free(dev->mdev, &qp->buf);
 974         free_uuar(&dev->mdev->priv.uuari, qp->bf->uuarn);
 975 }
 976
 977 static __be32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
 978 {
 979         if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) ||
 980             (attr->qp_type == IB_QPT_XRC_INI))
 981                 return cpu_to_be32(MLX5_SRQ_RQ);
 982         else if (!qp->has_rq)
 983                 return cpu_to_be32(MLX5_ZERO_LEN_RQ);
 984         else
 985                 return cpu_to_be32(MLX5_NON_ZERO_RQ);
 986 }
 987
 988 static int is_connected(enum ib_qp_type qp_type)
 989 {
 990         if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC)
 991                 return 1;
 992
 993         return 0;
 994 }
 995
 996 static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
 997                                     struct mlx5_ib_sq *sq, u32 tdn)
 998 {
 999         u32 in[MLX5_ST_SZ_DW(create_tis_in)];
1000         void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
1001
1002         memset(in, 0, sizeof(in));
1003
1004         MLX5_SET(tisc, tisc, transport_domain, tdn);
1005
1006         return mlx5_core_create_tis(dev->mdev, in, sizeof(in), &sq->tisn);
1007 }
1008
1009 static void destroy_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1010                                       struct mlx5_ib_sq *sq)
1011 {
1012         mlx5_core_destroy_tis(dev->mdev, sq->tisn);
1013 }
1014
1015 static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1016                                    struct mlx5_ib_sq *sq, void *qpin,
1017                                    struct ib_pd *pd)
1018 {
1019         struct mlx5_ib_ubuffer *ubuffer = &sq->ubuffer;
1020         __be64 *pas;
1021         void *in;
1022         void *sqc;
1023         void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1024         void *wq;
1025         int inlen;
1026         int err;
1027         int page_shift = 0;
1028         int npages;
1029         int ncont = 0;
1030         u32 offset = 0;
1031
1032         err = mlx5_ib_umem_get(dev, pd, ubuffer->buf_addr, ubuffer->buf_size,
1033                                &sq->ubuffer.umem, &npages, &page_shift,
1034                                &ncont, &offset);
1035         if (err)
1036                 return err;
1037
1038         inlen = MLX5_ST_SZ_BYTES(create_sq_in) + sizeof(u64) * ncont;
1039         in = mlx5_vzalloc(inlen);
1040         if (!in) {
1041                 err = -ENOMEM;
1042                 goto err_umem;
1043         }
1044
1045         sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
1046         MLX5_SET(sqc, sqc, flush_in_error_en, 1);
1047         MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
1048         MLX5_SET(sqc, sqc, user_index, MLX5_GET(qpc, qpc, user_index));
1049         MLX5_SET(sqc, sqc, cqn, MLX5_GET(qpc, qpc, cqn_snd));
1050         MLX5_SET(sqc, sqc, tis_lst_sz, 1);
1051         MLX5_SET(sqc, sqc, tis_num_0, sq->tisn);
1052
1053         wq = MLX5_ADDR_OF(sqc, sqc, wq);
1054         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1055         MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1056         MLX5_SET(wq, wq, uar_page, MLX5_GET(qpc, qpc, uar_page));
1057         MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1058         MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
1059         MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_sq_size));
1060         MLX5_SET(wq, wq, log_wq_pg_sz,  page_shift - MLX5_ADAPTER_PAGE_SHIFT);
1061         MLX5_SET(wq, wq, page_offset, offset);
1062
1063         pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1064         mlx5_ib_populate_pas(dev, sq->ubuffer.umem, page_shift, pas, 0);
1065
1066         err = mlx5_core_create_sq_tracked(dev->mdev, in, inlen, &sq->base.mqp);
1067
1068         kvfree(in);
1069
1070         if (err)
1071                 goto err_umem;
1072
1073         return 0;
1074
1075 err_umem:
1076         ib_umem_release(sq->ubuffer.umem);
1077         sq->ubuffer.umem = NULL;
1078
1079         return err;
1080 }
1081
1082 static void destroy_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1083                                      struct mlx5_ib_sq *sq)
1084 {
1085         mlx5_core_destroy_sq_tracked(dev->mdev, &sq->base.mqp);
1086         ib_umem_release(sq->ubuffer.umem);
1087 }
1088
1089 static int get_rq_pas_size(void *qpc)
1090 {
1091         u32 log_page_size = MLX5_GET(qpc, qpc, log_page_size) + 12;
1092         u32 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride);
1093         u32 log_rq_size   = MLX5_GET(qpc, qpc, log_rq_size);
1094         u32 page_offset   = MLX5_GET(qpc, qpc, page_offset);
1095         u32 po_quanta     = 1 << (log_page_size - 6);
1096         u32 rq_sz         = 1 << (log_rq_size + 4 + log_rq_stride);
1097         u32 page_size     = 1 << log_page_size;
1098         u32 rq_sz_po      = rq_sz + (page_offset * po_quanta);
1099         u32 rq_num_pas    = (rq_sz_po + page_size - 1) / page_size;
1100
1101         return rq_num_pas * sizeof(u64);
1102 }
1103
1104 static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1105                                    struct mlx5_ib_rq *rq, void *qpin)
1106 {
1107         struct mlx5_ib_qp *mqp = rq->base.container_mibqp;
1108         __be64 *pas;
1109         __be64 *qp_pas;
1110         void *in;
1111         void *rqc;
1112         void *wq;
1113         void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1114         int inlen;
1115         int err;
1116         u32 rq_pas_size = get_rq_pas_size(qpc);
1117
1118         inlen = MLX5_ST_SZ_BYTES(create_rq_in) + rq_pas_size;
1119         in = mlx5_vzalloc(inlen);
1120         if (!in)
1121                 return -ENOMEM;
1122
1123         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
1124         MLX5_SET(rqc, rqc, vsd, 1);
1125         MLX5_SET(rqc, rqc, mem_rq_type, MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
1126         MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
1127         MLX5_SET(rqc, rqc, flush_in_error_en, 1);
1128         MLX5_SET(rqc, rqc, user_index, MLX5_GET(qpc, qpc, user_index));
1129         MLX5_SET(rqc, rqc, cqn, MLX5_GET(qpc, qpc, cqn_rcv));
1130
1131         if (mqp->flags & MLX5_IB_QP_CAP_SCATTER_FCS)
1132                 MLX5_SET(rqc, rqc, scatter_fcs, 1);
1133
1134         wq = MLX5_ADDR_OF(rqc, rqc, wq);
1135         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1136         MLX5_SET(wq, wq, end_padding_mode,
1137                  MLX5_GET(qpc, qpc, end_padding_mode));
1138         MLX5_SET(wq, wq, page_offset, MLX5_GET(qpc, qpc, page_offset));
1139         MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1140         MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1141         MLX5_SET(wq, wq, log_wq_stride, MLX5_GET(qpc, qpc, log_rq_stride) + 4);
1142         MLX5_SET(wq, wq, log_wq_pg_sz, MLX5_GET(qpc, qpc, log_page_size));
1143         MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_rq_size));
1144
1145         pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1146         qp_pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, qpin, pas);
1147         memcpy(pas, qp_pas, rq_pas_size);
1148
1149         err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rq->base.mqp);
1150
1151         kvfree(in);
1152
1153         return err;
1154 }
1155
1156 static void destroy_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1157                                      struct mlx5_ib_rq *rq)
1158 {
1159         mlx5_core_destroy_rq_tracked(dev->mdev, &rq->base.mqp);
1160 }
1161
1162 static int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1163                                     struct mlx5_ib_rq *rq, u32 tdn)
1164 {
1165         u32 *in;
1166         void *tirc;
1167         int inlen;
1168         int err;
1169
1170         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1171         in = mlx5_vzalloc(inlen);
1172         if (!in)
1173                 return -ENOMEM;
1174
1175         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1176         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
1177         MLX5_SET(tirc, tirc, inline_rqn, rq->base.mqp.qpn);
1178         MLX5_SET(tirc, tirc, transport_domain, tdn);
1179
1180         err = mlx5_core_create_tir(dev->mdev, in, inlen, &rq->tirn);
1181
1182         kvfree(in);
1183
1184         return err;
1185 }
1186
1187 static void destroy_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1188                                       struct mlx5_ib_rq *rq)
1189 {
1190         mlx5_core_destroy_tir(dev->mdev, rq->tirn);
1191 }
1192
1193 static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1194                                 struct mlx5_create_qp_mbox_in *in,
1195                                 struct ib_pd *pd)
1196 {
1197         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1198         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1199         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1200         struct ib_uobject *uobj = pd->uobject;
1201         struct ib_ucontext *ucontext = uobj->context;
1202         struct mlx5_ib_ucontext *mucontext = to_mucontext(ucontext);
1203         int err;
1204         u32 tdn = mucontext->tdn;
1205
1206         if (qp->sq.wqe_cnt) {
1207                 err = create_raw_packet_qp_tis(dev, sq, tdn);
1208                 if (err)
1209                         return err;
1210
1211                 err = create_raw_packet_qp_sq(dev, sq, in, pd);
1212                 if (err)
1213                         goto err_destroy_tis;
1214
1215                 sq->base.container_mibqp = qp;
1216         }
1217
1218         if (qp->rq.wqe_cnt) {
1219                 rq->base.container_mibqp = qp;
1220
1221                 err = create_raw_packet_qp_rq(dev, rq, in);
1222                 if (err)
1223                         goto err_destroy_sq;
1224
1225
1226                 err = create_raw_packet_qp_tir(dev, rq, tdn);
1227                 if (err)
1228                         goto err_destroy_rq;
1229         }
1230
1231         qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn :
1232                                                      rq->base.mqp.qpn;
1233
1234         return 0;
1235
1236 err_destroy_rq:
1237         destroy_raw_packet_qp_rq(dev, rq);
1238 err_destroy_sq:
1239         if (!qp->sq.wqe_cnt)
1240                 return err;
1241         destroy_raw_packet_qp_sq(dev, sq);
1242 err_destroy_tis:
1243         destroy_raw_packet_qp_tis(dev, sq);
1244
1245         return err;
1246 }
1247
1248 static void destroy_raw_packet_qp(struct mlx5_ib_dev *dev,
1249                                   struct mlx5_ib_qp *qp)
1250 {
1251         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1252         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1253         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1254
1255         if (qp->rq.wqe_cnt) {
1256                 destroy_raw_packet_qp_tir(dev, rq);
1257                 destroy_raw_packet_qp_rq(dev, rq);
1258         }
1259
1260         if (qp->sq.wqe_cnt) {
1261                 destroy_raw_packet_qp_sq(dev, sq);
1262                 destroy_raw_packet_qp_tis(dev, sq);
1263         }
1264 }
1265
1266 static void raw_packet_qp_copy_info(struct mlx5_ib_qp *qp,
1267                                     struct mlx5_ib_raw_packet_qp *raw_packet_qp)
1268 {
1269         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1270         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1271
1272         sq->sq = &qp->sq;
1273         rq->rq = &qp->rq;
1274         sq->doorbell = &qp->db;
1275         rq->doorbell = &qp->db;
1276 }
1277
1278 static void destroy_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1279 {
1280         mlx5_core_destroy_tir(dev->mdev, qp->rss_qp.tirn);
1281 }
1282
1283 static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1284                                  struct ib_pd *pd,
1285                                  struct ib_qp_init_attr *init_attr,
1286                                  struct ib_udata *udata)
1287 {
1288         struct ib_uobject *uobj = pd->uobject;
1289         struct ib_ucontext *ucontext = uobj->context;
1290         struct mlx5_ib_ucontext *mucontext = to_mucontext(ucontext);
1291         struct mlx5_ib_create_qp_resp resp = {};
1292         int inlen;
1293         int err;
1294         u32 *in;
1295         void *tirc;
1296         void *hfso;
1297         u32 selected_fields = 0;
1298         size_t min_resp_len;
1299         u32 tdn = mucontext->tdn;
1300         struct mlx5_ib_create_qp_rss ucmd = {};
1301         size_t required_cmd_sz;
1302
1303         if (init_attr->qp_type != IB_QPT_RAW_PACKET)
1304                 return -EOPNOTSUPP;
1305
1306         if (init_attr->create_flags || init_attr->send_cq)
1307                 return -EINVAL;
1308
1309         min_resp_len = offsetof(typeof(resp), uuar_index) + sizeof(resp.uuar_index);
1310         if (udata->outlen < min_resp_len)
1311                 return -EINVAL;
1312
1313         required_cmd_sz = offsetof(typeof(ucmd), reserved1) + sizeof(ucmd.reserved1);
1314         if (udata->inlen < required_cmd_sz) {
1315                 mlx5_ib_dbg(dev, "invalid inlen\n");
1316                 return -EINVAL;
1317         }
1318
1319         if (udata->inlen > sizeof(ucmd) &&
1320             !ib_is_udata_cleared(udata, sizeof(ucmd),
1321                                  udata->inlen - sizeof(ucmd))) {
1322                 mlx5_ib_dbg(dev, "inlen is not supported\n");
1323                 return -EOPNOTSUPP;
1324         }
1325
1326         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
1327                 mlx5_ib_dbg(dev, "copy failed\n");
1328                 return -EFAULT;
1329         }
1330
1331         if (ucmd.comp_mask) {
1332                 mlx5_ib_dbg(dev, "invalid comp mask\n");
1333                 return -EOPNOTSUPP;
1334         }
1335
1336         if (memchr_inv(ucmd.reserved, 0, sizeof(ucmd.reserved)) || ucmd.reserved1) {
1337                 mlx5_ib_dbg(dev, "invalid reserved\n");
1338                 return -EOPNOTSUPP;
1339         }
1340
1341         err = ib_copy_to_udata(udata, &resp, min_resp_len);
1342         if (err) {
1343                 mlx5_ib_dbg(dev, "copy failed\n");
1344                 return -EINVAL;
1345         }
1346
1347         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1348         in = mlx5_vzalloc(inlen);
1349         if (!in)
1350                 return -ENOMEM;
1351
1352         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1353         MLX5_SET(tirc, tirc, disp_type,
1354                  MLX5_TIRC_DISP_TYPE_INDIRECT);
1355         MLX5_SET(tirc, tirc, indirect_table,
1356                  init_attr->rwq_ind_tbl->ind_tbl_num);
1357         MLX5_SET(tirc, tirc, transport_domain, tdn);
1358
1359         hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1360         switch (ucmd.rx_hash_function) {
1361         case MLX5_RX_HASH_FUNC_TOEPLITZ:
1362         {
1363                 void *rss_key = MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key);
1364                 size_t len = MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key);
1365
1366                 if (len != ucmd.rx_key_len) {
1367                         err = -EINVAL;
1368                         goto err;
1369                 }
1370
1371                 MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ);
1372                 MLX5_SET(tirc, tirc, rx_hash_symmetric, 1);
1373                 memcpy(rss_key, ucmd.rx_hash_key, len);
1374                 break;
1375         }
1376         default:
1377                 err = -EOPNOTSUPP;
1378                 goto err;
1379         }
1380
1381         if (!ucmd.rx_hash_fields_mask) {
1382                 /* special case when this TIR serves as steering entry without hashing */
1383                 if (!init_attr->rwq_ind_tbl->log_ind_tbl_size)
1384                         goto create_tir;
1385                 err = -EINVAL;
1386                 goto err;
1387         }
1388
1389         if (((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1390              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) &&
1391              ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1392              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))) {
1393                 err = -EINVAL;
1394                 goto err;
1395         }
1396
1397         /* If none of IPV4 & IPV6 SRC/DST was set - this bit field is ignored */
1398         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1399             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4))
1400                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1401                          MLX5_L3_PROT_TYPE_IPV4);
1402         else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1403                  (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1404                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1405                          MLX5_L3_PROT_TYPE_IPV6);
1406
1407         if (((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1408              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP)) &&
1409              ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1410              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))) {
1411                 err = -EINVAL;
1412                 goto err;
1413         }
1414
1415         /* If none of TCP & UDP SRC/DST was set - this bit field is ignored */
1416         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1417             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
1418                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1419                          MLX5_L4_PROT_TYPE_TCP);
1420         else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1421                  (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1422                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1423                          MLX5_L4_PROT_TYPE_UDP);
1424
1425         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1426             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6))
1427                 selected_fields |= MLX5_HASH_FIELD_SEL_SRC_IP;
1428
1429         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4) ||
1430             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1431                 selected_fields |= MLX5_HASH_FIELD_SEL_DST_IP;
1432
1433         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1434             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP))
1435                 selected_fields |= MLX5_HASH_FIELD_SEL_L4_SPORT;
1436
1437         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP) ||
1438             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1439                 selected_fields |= MLX5_HASH_FIELD_SEL_L4_DPORT;
1440
1441         MLX5_SET(rx_hash_field_select, hfso, selected_fields, selected_fields);
1442
1443 create_tir:
1444         err = mlx5_core_create_tir(dev->mdev, in, inlen, &qp->rss_qp.tirn);
1445
1446         if (err)
1447                 goto err;
1448
1449         kvfree(in);
1450         /* qpn is reserved for that QP */
1451         qp->trans_qp.base.mqp.qpn = 0;
1452         return 0;
1453
1454 err:
1455         kvfree(in);
1456         return err;
1457 }
1458
1459 static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
1460                             struct ib_qp_init_attr *init_attr,
1461                             struct ib_udata *udata, struct mlx5_ib_qp *qp)
1462 {
1463         struct mlx5_ib_resources *devr = &dev->devr;
1464         struct mlx5_core_dev *mdev = dev->mdev;
1465         struct mlx5_ib_qp_base *base;
1466         struct mlx5_ib_create_qp_resp resp;
1467         struct mlx5_create_qp_mbox_in *in;
1468         struct mlx5_ib_create_qp ucmd;
1469         struct mlx5_ib_cq *send_cq;
1470         struct mlx5_ib_cq *recv_cq;
1471         unsigned long flags;
1472         int inlen = sizeof(*in);
1473         int err;
1474         u32 uidx = MLX5_IB_DEFAULT_UIDX;
1475         void *qpc;
1476
1477         base = init_attr->qp_type == IB_QPT_RAW_PACKET ?
1478                &qp->raw_packet_qp.rq.base :
1479                &qp->trans_qp.base;
1480
1481         if (init_attr->qp_type != IB_QPT_RAW_PACKET)
1482                 mlx5_ib_odp_create_qp(qp);
1483
1484         mutex_init(&qp->mutex);
1485         spin_lock_init(&qp->sq.lock);
1486         spin_lock_init(&qp->rq.lock);
1487
1488         if (init_attr->rwq_ind_tbl) {
1489                 if (!udata)
1490                         return -ENOSYS;
1491
1492                 err = create_rss_raw_qp_tir(dev, qp, pd, init_attr, udata);
1493                 return err;
1494         }
1495
1496         if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {
1497                 if (!MLX5_CAP_GEN(mdev, block_lb_mc)) {
1498                         mlx5_ib_dbg(dev, "block multicast loopback isn't supported\n");
1499                         return -EINVAL;
1500                 } else {
1501                         qp->flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK;
1502                 }
1503         }
1504
1505         if (init_attr->create_flags &
1506                         (IB_QP_CREATE_CROSS_CHANNEL |
1507                          IB_QP_CREATE_MANAGED_SEND |
1508                          IB_QP_CREATE_MANAGED_RECV)) {
1509                 if (!MLX5_CAP_GEN(mdev, cd)) {
1510                         mlx5_ib_dbg(dev, "cross-channel isn't supported\n");
1511                         return -EINVAL;
1512                 }
1513                 if (init_attr->create_flags & IB_QP_CREATE_CROSS_CHANNEL)
1514                         qp->flags |= MLX5_IB_QP_CROSS_CHANNEL;
1515                 if (init_attr->create_flags & IB_QP_CREATE_MANAGED_SEND)
1516                         qp->flags |= MLX5_IB_QP_MANAGED_SEND;
1517                 if (init_attr->create_flags & IB_QP_CREATE_MANAGED_RECV)
1518                         qp->flags |= MLX5_IB_QP_MANAGED_RECV;
1519         }
1520
1521         if (init_attr->qp_type == IB_QPT_UD &&
1522             (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO))
1523                 if (!MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
1524                         mlx5_ib_dbg(dev, "ipoib UD lso qp isn't supported\n");
1525                         return -EOPNOTSUPP;
1526                 }
1527
1528         if (init_attr->create_flags & IB_QP_CREATE_SCATTER_FCS) {
1529                 if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
1530                         mlx5_ib_dbg(dev, "Scatter FCS is supported only for Raw Packet QPs");
1531                         return -EOPNOTSUPP;
1532                 }
1533                 if (!MLX5_CAP_GEN(dev->mdev, eth_net_offloads) ||
1534                     !MLX5_CAP_ETH(dev->mdev, scatter_fcs)) {
1535                         mlx5_ib_dbg(dev, "Scatter FCS isn't supported\n");
1536                         return -EOPNOTSUPP;
1537                 }
1538                 qp->flags |= MLX5_IB_QP_CAP_SCATTER_FCS;
1539         }
1540
1541         if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
1542                 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
1543
1544         if (pd && pd->uobject) {
1545                 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
1546                         mlx5_ib_dbg(dev, "copy failed\n");
1547                         return -EFAULT;
1548                 }
1549
1550                 err = get_qp_user_index(to_mucontext(pd->uobject->context),
1551                                         &ucmd, udata->inlen, &uidx);
1552                 if (err)
1553                         return err;
1554
1555                 qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE);
1556                 qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE);
1557         } else {
1558                 qp->wq_sig = !!wq_signature;
1559         }
1560
1561         qp->has_rq = qp_has_rq(init_attr);
1562         err = set_rq_size(dev, &init_attr->cap, qp->has_rq,
1563                           qp, (pd && pd->uobject) ? &ucmd : NULL);
1564         if (err) {
1565                 mlx5_ib_dbg(dev, "err %d\n", err);
1566                 return err;
1567         }
1568
1569         if (pd) {
1570                 if (pd->uobject) {
1571                         __u32 max_wqes =
1572                                 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
1573                         mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n", ucmd.sq_wqe_count);
1574                         if (ucmd.rq_wqe_shift != qp->rq.wqe_shift ||
1575                             ucmd.rq_wqe_count != qp->rq.wqe_cnt) {
1576                                 mlx5_ib_dbg(dev, "invalid rq params\n");
1577                                 return -EINVAL;
1578                         }
1579                         if (ucmd.sq_wqe_count > max_wqes) {
1580                                 mlx5_ib_dbg(dev, "requested sq_wqe_count (%d) > max allowed (%d)\n",
1581                                             ucmd.sq_wqe_count, max_wqes);
1582                                 return -EINVAL;
1583                         }
1584                         if (init_attr->create_flags &
1585                             mlx5_ib_create_qp_sqpn_qp1()) {
1586                                 mlx5_ib_dbg(dev, "user-space is not allowed to create UD QPs spoofing as QP1\n");
1587                                 return -EINVAL;
1588                         }
1589                         err = create_user_qp(dev, pd, qp, udata, init_attr, &in,
1590                                              &resp, &inlen, base);
1591                         if (err)
1592                                 mlx5_ib_dbg(dev, "err %d\n", err);
1593                 } else {
1594                         err = create_kernel_qp(dev, init_attr, qp, &in, &inlen,
1595                                                base);
1596                         if (err)
1597                                 mlx5_ib_dbg(dev, "err %d\n", err);
1598                 }
1599
1600                 if (err)
1601                         return err;
1602         } else {
1603                 in = mlx5_vzalloc(sizeof(*in));
1604                 if (!in)
1605                         return -ENOMEM;
1606
1607                 qp->create_type = MLX5_QP_EMPTY;
1608         }
1609
1610         if (is_sqp(init_attr->qp_type))
1611                 qp->port = init_attr->port_num;
1612
1613         in->ctx.flags = cpu_to_be32(to_mlx5_st(init_attr->qp_type) << 16 |
1614                                     MLX5_QP_PM_MIGRATED << 11);
1615
1616         if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR)
1617                 in->ctx.flags_pd = cpu_to_be32(to_mpd(pd ? pd : devr->p0)->pdn);
1618         else
1619                 in->ctx.flags_pd = cpu_to_be32(MLX5_QP_LAT_SENSITIVE);
1620
1621         if (qp->wq_sig)
1622                 in->ctx.flags_pd |= cpu_to_be32(MLX5_QP_ENABLE_SIG);
1623
1624         if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
1625                 in->ctx.flags_pd |= cpu_to_be32(MLX5_QP_BLOCK_MCAST);
1626
1627         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
1628                 in->ctx.params2 |= cpu_to_be32(MLX5_QP_BIT_CC_MASTER);
1629         if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
1630                 in->ctx.params2 |= cpu_to_be32(MLX5_QP_BIT_CC_SLAVE_SEND);
1631         if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
1632                 in->ctx.params2 |= cpu_to_be32(MLX5_QP_BIT_CC_SLAVE_RECV);
1633
1634         if (qp->scat_cqe && is_connected(init_attr->qp_type)) {
1635                 int rcqe_sz;
1636                 int scqe_sz;
1637
1638                 rcqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->recv_cq);
1639                 scqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->send_cq);
1640
1641                 if (rcqe_sz == 128)
1642                         in->ctx.cs_res = MLX5_RES_SCAT_DATA64_CQE;
1643                 else
1644                         in->ctx.cs_res = MLX5_RES_SCAT_DATA32_CQE;
1645
1646                 if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) {
1647                         if (scqe_sz == 128)
1648                                 in->ctx.cs_req = MLX5_REQ_SCAT_DATA64_CQE;
1649                         else
1650                                 in->ctx.cs_req = MLX5_REQ_SCAT_DATA32_CQE;
1651                 }
1652         }
1653
1654         if (qp->rq.wqe_cnt) {
1655                 in->ctx.rq_size_stride = (qp->rq.wqe_shift - 4);
1656                 in->ctx.rq_size_stride |= ilog2(qp->rq.wqe_cnt) << 3;
1657         }
1658
1659         in->ctx.rq_type_srqn = get_rx_type(qp, init_attr);
1660
1661         if (qp->sq.wqe_cnt)
1662                 in->ctx.sq_crq_size |= cpu_to_be16(ilog2(qp->sq.wqe_cnt) << 11);
1663         else
1664                 in->ctx.sq_crq_size |= cpu_to_be16(0x8000);
1665
1666         /* Set default resources */
1667         switch (init_attr->qp_type) {
1668         case IB_QPT_XRC_TGT:
1669                 in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
1670                 in->ctx.cqn_send = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
1671                 in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn);
1672                 in->ctx.xrcd = cpu_to_be32(to_mxrcd(init_attr->xrcd)->xrcdn);
1673                 break;
1674         case IB_QPT_XRC_INI:
1675                 in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn);
1676                 in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn);
1677                 in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn);
1678                 break;
1679         default:
1680                 if (init_attr->srq) {
1681                         in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x0)->xrcdn);
1682                         in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(init_attr->srq)->msrq.srqn);
1683                 } else {
1684                         in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn);
1685                         in->ctx.rq_type_srqn |=
1686                                 cpu_to_be32(to_msrq(devr->s1)->msrq.srqn);
1687                 }
1688         }
1689
1690         if (init_attr->send_cq)
1691                 in->ctx.cqn_send = cpu_to_be32(to_mcq(init_attr->send_cq)->mcq.cqn);
1692
1693         if (init_attr->recv_cq)
1694                 in->ctx.cqn_recv = cpu_to_be32(to_mcq(init_attr->recv_cq)->mcq.cqn);
1695
1696         in->ctx.db_rec_addr = cpu_to_be64(qp->db.dma);
1697
1698         if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1) {
1699                 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
1700                 /* 0xffffff means we ask to work with cqe version 0 */
1701                 MLX5_SET(qpc, qpc, user_index, uidx);
1702         }
1703         /* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */
1704         if (init_attr->qp_type == IB_QPT_UD &&
1705             (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)) {
1706                 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
1707                 MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
1708                 qp->flags |= MLX5_IB_QP_LSO;
1709         }
1710
1711         if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
1712                 qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd.sq_buf_addr;
1713                 raw_packet_qp_copy_info(qp, &qp->raw_packet_qp);
1714                 err = create_raw_packet_qp(dev, qp, in, pd);
1715         } else {
1716                 err = mlx5_core_create_qp(dev->mdev, &base->mqp, in, inlen);
1717         }
1718
1719         if (err) {
1720                 mlx5_ib_dbg(dev, "create qp failed\n");
1721                 goto err_create;
1722         }
1723
1724         kvfree(in);
1725
1726         base->container_mibqp = qp;
1727         base->mqp.event = mlx5_ib_qp_event;
1728
1729         get_cqs(init_attr->qp_type, init_attr->send_cq, init_attr->recv_cq,
1730                 &send_cq, &recv_cq);
1731         spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
1732         mlx5_ib_lock_cqs(send_cq, recv_cq);
1733         /* Maintain device to QPs access, needed for further handling via reset
1734          * flow
1735          */
1736         list_add_tail(&qp->qps_list, &dev->qp_list);
1737         /* Maintain CQ to QPs access, needed for further handling via reset flow
1738          */
1739         if (send_cq)
1740                 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
1741         if (recv_cq)
1742                 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
1743         mlx5_ib_unlock_cqs(send_cq, recv_cq);
1744         spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
1745
1746         return 0;
1747
1748 err_create:
1749         if (qp->create_type == MLX5_QP_USER)
1750                 destroy_qp_user(pd, qp, base);
1751         else if (qp->create_type == MLX5_QP_KERNEL)
1752                 destroy_qp_kernel(dev, qp);
1753
1754         kvfree(in);
1755         return err;
1756 }
1757
1758 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
1759         __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
1760 {
1761         if (send_cq) {
1762                 if (recv_cq) {
1763                         if (send_cq->mcq.cqn < recv_cq->mcq.cqn)  {
1764                                 spin_lock(&send_cq->lock);
1765                                 spin_lock_nested(&recv_cq->lock,
1766                                                  SINGLE_DEPTH_NESTING);
1767                         } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
1768                                 spin_lock(&send_cq->lock);
1769                                 __acquire(&recv_cq->lock);
1770                         } else {
1771                                 spin_lock(&recv_cq->lock);
1772                                 spin_lock_nested(&send_cq->lock,
1773                                                  SINGLE_DEPTH_NESTING);
1774                         }
1775                 } else {
1776                         spin_lock(&send_cq->lock);
1777                         __acquire(&recv_cq->lock);
1778                 }
1779         } else if (recv_cq) {
1780                 spin_lock(&recv_cq->lock);
1781                 __acquire(&send_cq->lock);
1782         } else {
1783                 __acquire(&send_cq->lock);
1784                 __acquire(&recv_cq->lock);
1785         }
1786 }
1787
1788 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
1789         __releases(&send_cq->lock) __releases(&recv_cq->lock)
1790 {
1791         if (send_cq) {
1792                 if (recv_cq) {
1793                         if (send_cq->mcq.cqn < recv_cq->mcq.cqn)  {
1794                                 spin_unlock(&recv_cq->lock);
1795                                 spin_unlock(&send_cq->lock);
1796                         } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
1797                                 __release(&recv_cq->lock);
1798                                 spin_unlock(&send_cq->lock);
1799                         } else {
1800                                 spin_unlock(&send_cq->lock);
1801                                 spin_unlock(&recv_cq->lock);
1802                         }
1803                 } else {
1804                         __release(&recv_cq->lock);
1805                         spin_unlock(&send_cq->lock);
1806                 }
1807         } else if (recv_cq) {
1808                 __release(&send_cq->lock);
1809                 spin_unlock(&recv_cq->lock);
1810         } else {
1811                 __release(&recv_cq->lock);
1812                 __release(&send_cq->lock);
1813         }
1814 }
1815
1816 static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp)
1817 {
1818         return to_mpd(qp->ibqp.pd);
1819 }
1820
1821 static void get_cqs(enum ib_qp_type qp_type,
1822                     struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
1823                     struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
1824 {
1825         switch (qp_type) {
1826         case IB_QPT_XRC_TGT:
1827                 *send_cq = NULL;
1828                 *recv_cq = NULL;
1829                 break;
1830         case MLX5_IB_QPT_REG_UMR:
1831         case IB_QPT_XRC_INI:
1832                 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
1833                 *recv_cq = NULL;
1834                 break;
1835
1836         case IB_QPT_SMI:
1837         case MLX5_IB_QPT_HW_GSI:
1838         case IB_QPT_RC:
1839         case IB_QPT_UC:
1840         case IB_QPT_UD:
1841         case IB_QPT_RAW_IPV6:
1842         case IB_QPT_RAW_ETHERTYPE:
1843         case IB_QPT_RAW_PACKET:
1844                 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
1845                 *recv_cq = ib_recv_cq ? to_mcq(ib_recv_cq) : NULL;
1846                 break;
1847
1848         case IB_QPT_MAX:
1849         default:
1850                 *send_cq = NULL;
1851                 *recv_cq = NULL;
1852                 break;
1853         }
1854 }
1855
1856 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1857                                 u16 operation);
1858
1859 static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1860 {
1861         struct mlx5_ib_cq *send_cq, *recv_cq;
1862         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
1863         struct mlx5_modify_qp_mbox_in *in;
1864         unsigned long flags;
1865         int err;
1866
1867         if (qp->ibqp.rwq_ind_tbl) {
1868                 destroy_rss_raw_qp_tir(dev, qp);
1869                 return;
1870         }
1871
1872         base = qp->ibqp.qp_type == IB_QPT_RAW_PACKET ?
1873                &qp->raw_packet_qp.rq.base :
1874                &qp->trans_qp.base;
1875
1876         in = kzalloc(sizeof(*in), GFP_KERNEL);
1877         if (!in)
1878                 return;
1879
1880         if (qp->state != IB_QPS_RESET) {
1881                 if (qp->ibqp.qp_type != IB_QPT_RAW_PACKET) {
1882                         mlx5_ib_qp_disable_pagefaults(qp);
1883                         err = mlx5_core_qp_modify(dev->mdev,
1884                                                   MLX5_CMD_OP_2RST_QP, in, 0,
1885                                                   &base->mqp);
1886                 } else {
1887                         err = modify_raw_packet_qp(dev, qp,
1888                                                    MLX5_CMD_OP_2RST_QP);
1889                 }
1890                 if (err)
1891                         mlx5_ib_warn(dev, "mlx5_ib: modify QP 0x%06x to RESET failed\n",
1892                                      base->mqp.qpn);
1893         }
1894
1895         get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
1896                 &send_cq, &recv_cq);
1897
1898         spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
1899         mlx5_ib_lock_cqs(send_cq, recv_cq);
1900         /* del from lists under both locks above to protect reset flow paths */
1901         list_del(&qp->qps_list);
1902         if (send_cq)
1903                 list_del(&qp->cq_send_list);
1904
1905         if (recv_cq)
1906                 list_del(&qp->cq_recv_list);
1907
1908         if (qp->create_type == MLX5_QP_KERNEL) {
1909                 __mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
1910                                    qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
1911                 if (send_cq != recv_cq)
1912                         __mlx5_ib_cq_clean(send_cq, base->mqp.qpn,
1913                                            NULL);
1914         }
1915         mlx5_ib_unlock_cqs(send_cq, recv_cq);
1916         spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
1917
1918         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
1919                 destroy_raw_packet_qp(dev, qp);
1920         } else {
1921                 err = mlx5_core_destroy_qp(dev->mdev, &base->mqp);
1922                 if (err)
1923                         mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n",
1924                                      base->mqp.qpn);
1925         }
1926
1927         kfree(in);
1928
1929         if (qp->create_type == MLX5_QP_KERNEL)
1930                 destroy_qp_kernel(dev, qp);
1931         else if (qp->create_type == MLX5_QP_USER)
1932                 destroy_qp_user(&get_pd(qp)->ibpd, qp, base);
1933 }
1934
1935 static const char *ib_qp_type_str(enum ib_qp_type type)
1936 {
1937         switch (type) {
1938         case IB_QPT_SMI:
1939                 return "IB_QPT_SMI";
1940         case IB_QPT_GSI:
1941                 return "IB_QPT_GSI";
1942         case IB_QPT_RC:
1943                 return "IB_QPT_RC";
1944         case IB_QPT_UC:
1945                 return "IB_QPT_UC";
1946         case IB_QPT_UD:
1947                 return "IB_QPT_UD";
1948         case IB_QPT_RAW_IPV6:
1949                 return "IB_QPT_RAW_IPV6";
1950         case IB_QPT_RAW_ETHERTYPE:
1951                 return "IB_QPT_RAW_ETHERTYPE";
1952         case IB_QPT_XRC_INI:
1953                 return "IB_QPT_XRC_INI";
1954         case IB_QPT_XRC_TGT:
1955                 return "IB_QPT_XRC_TGT";
1956         case IB_QPT_RAW_PACKET:
1957                 return "IB_QPT_RAW_PACKET";
1958         case MLX5_IB_QPT_REG_UMR:
1959                 return "MLX5_IB_QPT_REG_UMR";
1960         case IB_QPT_MAX:
1961         default:
1962                 return "Invalid QP type";
1963         }
1964 }
1965
1966 struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
1967                                 struct ib_qp_init_attr *init_attr,
1968                                 struct ib_udata *udata)
1969 {
1970         struct mlx5_ib_dev *dev;
1971         struct mlx5_ib_qp *qp;
1972         u16 xrcdn = 0;
1973         int err;
1974
1975         if (pd) {
1976                 dev = to_mdev(pd->device);
1977
1978                 if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
1979                         if (!pd->uobject) {
1980                                 mlx5_ib_dbg(dev, "Raw Packet QP is not supported for kernel consumers\n");
1981                                 return ERR_PTR(-EINVAL);
1982                         } else if (!to_mucontext(pd->uobject->context)->cqe_version) {
1983                                 mlx5_ib_dbg(dev, "Raw Packet QP is only supported for CQE version > 0\n");
1984                                 return ERR_PTR(-EINVAL);
1985                         }
1986                 }
1987         } else {
1988                 /* being cautious here */
1989                 if (init_attr->qp_type != IB_QPT_XRC_TGT &&
1990                     init_attr->qp_type != MLX5_IB_QPT_REG_UMR) {
1991                         pr_warn("%s: no PD for transport %s\n", __func__,
1992                                 ib_qp_type_str(init_attr->qp_type));
1993                         return ERR_PTR(-EINVAL);
1994                 }
1995                 dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device);
1996         }
1997
1998         switch (init_attr->qp_type) {
1999         case IB_QPT_XRC_TGT:
2000         case IB_QPT_XRC_INI:
2001                 if (!MLX5_CAP_GEN(dev->mdev, xrc)) {
2002                         mlx5_ib_dbg(dev, "XRC not supported\n");
2003                         return ERR_PTR(-ENOSYS);
2004                 }
2005                 init_attr->recv_cq = NULL;
2006                 if (init_attr->qp_type == IB_QPT_XRC_TGT) {
2007                         xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn;
2008                         init_attr->send_cq = NULL;
2009                 }
2010
2011                 /* fall through */
2012         case IB_QPT_RAW_PACKET:
2013         case IB_QPT_RC:
2014         case IB_QPT_UC:
2015         case IB_QPT_UD:
2016         case IB_QPT_SMI:
2017         case MLX5_IB_QPT_HW_GSI:
2018         case MLX5_IB_QPT_REG_UMR:
2019                 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
2020                 if (!qp)
2021                         return ERR_PTR(-ENOMEM);
2022
2023                 err = create_qp_common(dev, pd, init_attr, udata, qp);
2024                 if (err) {
2025                         mlx5_ib_dbg(dev, "create_qp_common failed\n");
2026                         kfree(qp);
2027                         return ERR_PTR(err);
2028                 }
2029
2030                 if (is_qp0(init_attr->qp_type))
2031                         qp->ibqp.qp_num = 0;
2032                 else if (is_qp1(init_attr->qp_type))
2033                         qp->ibqp.qp_num = 1;
2034                 else
2035                         qp->ibqp.qp_num = qp->trans_qp.base.mqp.qpn;
2036
2037                 mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n",
2038                             qp->ibqp.qp_num, qp->trans_qp.base.mqp.qpn,
2039                             to_mcq(init_attr->recv_cq)->mcq.cqn,
2040                             to_mcq(init_attr->send_cq)->mcq.cqn);
2041
2042                 qp->trans_qp.xrcdn = xrcdn;
2043
2044                 break;
2045
2046         case IB_QPT_GSI:
2047                 return mlx5_ib_gsi_create_qp(pd, init_attr);
2048
2049         case IB_QPT_RAW_IPV6:
2050         case IB_QPT_RAW_ETHERTYPE:
2051         case IB_QPT_MAX:
2052         default:
2053                 mlx5_ib_dbg(dev, "unsupported qp type %d\n",
2054                             init_attr->qp_type);
2055                 /* Don't support raw QPs */
2056                 return ERR_PTR(-EINVAL);
2057         }
2058
2059         return &qp->ibqp;
2060 }
2061
2062 int mlx5_ib_destroy_qp(struct ib_qp *qp)
2063 {
2064         struct mlx5_ib_dev *dev = to_mdev(qp->device);
2065         struct mlx5_ib_qp *mqp = to_mqp(qp);
2066
2067         if (unlikely(qp->qp_type == IB_QPT_GSI))
2068                 return mlx5_ib_gsi_destroy_qp(qp);
2069
2070         destroy_qp_common(dev, mqp);
2071
2072         kfree(mqp);
2073
2074         return 0;
2075 }
2076
2077 static __be32 to_mlx5_access_flags(struct mlx5_ib_qp *qp, const struct ib_qp_attr *attr,
2078                                    int attr_mask)
2079 {
2080         u32 hw_access_flags = 0;
2081         u8 dest_rd_atomic;
2082         u32 access_flags;
2083
2084         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
2085                 dest_rd_atomic = attr->max_dest_rd_atomic;
2086         else
2087                 dest_rd_atomic = qp->trans_qp.resp_depth;
2088
2089         if (attr_mask & IB_QP_ACCESS_FLAGS)
2090                 access_flags = attr->qp_access_flags;
2091         else
2092                 access_flags = qp->trans_qp.atomic_rd_en;
2093
2094         if (!dest_rd_atomic)
2095                 access_flags &= IB_ACCESS_REMOTE_WRITE;
2096
2097         if (access_flags & IB_ACCESS_REMOTE_READ)
2098                 hw_access_flags |= MLX5_QP_BIT_RRE;
2099         if (access_flags & IB_ACCESS_REMOTE_ATOMIC)
2100                 hw_access_flags |= (MLX5_QP_BIT_RAE | MLX5_ATOMIC_MODE_CX);
2101         if (access_flags & IB_ACCESS_REMOTE_WRITE)
2102                 hw_access_flags |= MLX5_QP_BIT_RWE;
2103
2104         return cpu_to_be32(hw_access_flags);
2105 }
2106
2107 enum {
2108         MLX5_PATH_FLAG_FL       = 1 << 0,
2109         MLX5_PATH_FLAG_FREE_AR  = 1 << 1,
2110         MLX5_PATH_FLAG_COUNTER  = 1 << 2,
2111 };
2112
2113 static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
2114 {
2115         if (rate == IB_RATE_PORT_CURRENT) {
2116                 return 0;
2117         } else if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS) {
2118                 return -EINVAL;
2119         } else {
2120                 while (rate != IB_RATE_2_5_GBPS &&
2121                        !(1 << (rate + MLX5_STAT_RATE_OFFSET) &
2122                          MLX5_CAP_GEN(dev->mdev, stat_rate_support)))
2123                         --rate;
2124         }
2125
2126         return rate + MLX5_STAT_RATE_OFFSET;
2127 }
2128
2129 static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,
2130                                       struct mlx5_ib_sq *sq, u8 sl)
2131 {
2132         void *in;
2133         void *tisc;
2134         int inlen;
2135         int err;
2136
2137         inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
2138         in = mlx5_vzalloc(inlen);
2139         if (!in)
2140                 return -ENOMEM;
2141
2142         MLX5_SET(modify_tis_in, in, bitmask.prio, 1);
2143
2144         tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
2145         MLX5_SET(tisc, tisc, prio, ((sl & 0x7) << 1));
2146
2147         err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
2148
2149         kvfree(in);
2150
2151         return err;
2152 }
2153
2154 static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2155                          const struct ib_ah_attr *ah,
2156                          struct mlx5_qp_path *path, u8 port, int attr_mask,
2157                          u32 path_flags, const struct ib_qp_attr *attr,
2158                          bool alt)
2159 {
2160         enum rdma_link_layer ll = rdma_port_get_link_layer(&dev->ib_dev, port);
2161         int err;
2162
2163         if (attr_mask & IB_QP_PKEY_INDEX)
2164                 path->pkey_index = cpu_to_be16(alt ? attr->alt_pkey_index :
2165                                                      attr->pkey_index);
2166
2167         if (ah->ah_flags & IB_AH_GRH) {
2168                 if (ah->grh.sgid_index >=
2169                     dev->mdev->port_caps[port - 1].gid_table_len) {
2170                         pr_err("sgid_index (%u) too large. max is %d\n",
2171                                ah->grh.sgid_index,
2172                                dev->mdev->port_caps[port - 1].gid_table_len);
2173                         return -EINVAL;
2174                 }
2175         }
2176
2177         if (ll == IB_LINK_LAYER_ETHERNET) {
2178                 if (!(ah->ah_flags & IB_AH_GRH))
2179                         return -EINVAL;
2180                 memcpy(path->rmac, ah->dmac, sizeof(ah->dmac));
2181                 path->udp_sport = mlx5_get_roce_udp_sport(dev, port,
2182                                                           ah->grh.sgid_index);
2183                 path->dci_cfi_prio_sl = (ah->sl & 0x7) << 4;
2184         } else {
2185                 path->fl_free_ar = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0;
2186                 path->fl_free_ar |=
2187                         (path_flags & MLX5_PATH_FLAG_FREE_AR) ? 0x40 : 0;
2188                 path->rlid = cpu_to_be16(ah->dlid);
2189                 path->grh_mlid = ah->src_path_bits & 0x7f;
2190                 if (ah->ah_flags & IB_AH_GRH)
2191                         path->grh_mlid  |= 1 << 7;
2192                 path->dci_cfi_prio_sl = ah->sl & 0xf;
2193         }
2194
2195         if (ah->ah_flags & IB_AH_GRH) {
2196                 path->mgid_index = ah->grh.sgid_index;
2197                 path->hop_limit  = ah->grh.hop_limit;
2198                 path->tclass_flowlabel =
2199                         cpu_to_be32((ah->grh.traffic_class << 20) |
2200                                     (ah->grh.flow_label));
2201                 memcpy(path->rgid, ah->grh.dgid.raw, 16);
2202         }
2203
2204         err = ib_rate_to_mlx5(dev, ah->static_rate);
2205         if (err < 0)
2206                 return err;
2207         path->static_rate = err;
2208         path->port = port;
2209
2210         if (attr_mask & IB_QP_TIMEOUT)
2211                 path->ackto_lt = (alt ? attr->alt_timeout : attr->timeout) << 3;
2212
2213         if ((qp->ibqp.qp_type == IB_QPT_RAW_PACKET) && qp->sq.wqe_cnt)
2214                 return modify_raw_packet_eth_prio(dev->mdev,
2215                                                   &qp->raw_packet_qp.sq,
2216                                                   ah->sl & 0xf);
2217
2218         return 0;
2219 }
2220
2221 static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = {
2222         [MLX5_QP_STATE_INIT] = {
2223                 [MLX5_QP_STATE_INIT] = {
2224                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE            |
2225                                           MLX5_QP_OPTPAR_RAE            |
2226                                           MLX5_QP_OPTPAR_RWE            |
2227                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
2228                                           MLX5_QP_OPTPAR_PRI_PORT,
2229                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE            |
2230                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
2231                                           MLX5_QP_OPTPAR_PRI_PORT,
2232                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX     |
2233                                           MLX5_QP_OPTPAR_Q_KEY          |
2234                                           MLX5_QP_OPTPAR_PRI_PORT,
2235                 },
2236                 [MLX5_QP_STATE_RTR] = {
2237                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2238                                           MLX5_QP_OPTPAR_RRE            |
2239                                           MLX5_QP_OPTPAR_RAE            |
2240                                           MLX5_QP_OPTPAR_RWE            |
2241                                           MLX5_QP_OPTPAR_PKEY_INDEX,
2242                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2243                                           MLX5_QP_OPTPAR_RWE            |
2244                                           MLX5_QP_OPTPAR_PKEY_INDEX,
2245                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX     |
2246                                           MLX5_QP_OPTPAR_Q_KEY,
2247                         [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX    |
2248                                            MLX5_QP_OPTPAR_Q_KEY,
2249                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
2250                                           MLX5_QP_OPTPAR_RRE            |
2251                                           MLX5_QP_OPTPAR_RAE            |
2252                                           MLX5_QP_OPTPAR_RWE            |
2253                                           MLX5_QP_OPTPAR_PKEY_INDEX,
2254                 },
2255         },
2256         [MLX5_QP_STATE_RTR] = {
2257                 [MLX5_QP_STATE_RTS] = {
2258                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2259                                           MLX5_QP_OPTPAR_RRE            |
2260                                           MLX5_QP_OPTPAR_RAE            |
2261                                           MLX5_QP_OPTPAR_RWE            |
2262                                           MLX5_QP_OPTPAR_PM_STATE       |
2263                                           MLX5_QP_OPTPAR_RNR_TIMEOUT,
2264                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2265                                           MLX5_QP_OPTPAR_RWE            |
2266                                           MLX5_QP_OPTPAR_PM_STATE,
2267                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
2268                 },
2269         },
2270         [MLX5_QP_STATE_RTS] = {
2271                 [MLX5_QP_STATE_RTS] = {
2272                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE            |
2273                                           MLX5_QP_OPTPAR_RAE            |
2274                                           MLX5_QP_OPTPAR_RWE            |
2275                                           MLX5_QP_OPTPAR_RNR_TIMEOUT    |
2276                                           MLX5_QP_OPTPAR_PM_STATE       |
2277                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
2278                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE            |
2279                                           MLX5_QP_OPTPAR_PM_STATE       |
2280                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
2281                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY          |
2282                                           MLX5_QP_OPTPAR_SRQN           |
2283                                           MLX5_QP_OPTPAR_CQN_RCV,
2284                 },
2285         },
2286         [MLX5_QP_STATE_SQER] = {
2287                 [MLX5_QP_STATE_RTS] = {
2288                         [MLX5_QP_ST_UD]  = MLX5_QP_OPTPAR_Q_KEY,
2289                         [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY,
2290                         [MLX5_QP_ST_UC]  = MLX5_QP_OPTPAR_RWE,
2291                         [MLX5_QP_ST_RC]  = MLX5_QP_OPTPAR_RNR_TIMEOUT   |
2292                                            MLX5_QP_OPTPAR_RWE           |
2293                                            MLX5_QP_OPTPAR_RAE           |
2294                                            MLX5_QP_OPTPAR_RRE,
2295                 },
2296         },
2297 };
2298
2299 static int ib_nr_to_mlx5_nr(int ib_mask)
2300 {
2301         switch (ib_mask) {
2302         case IB_QP_STATE:
2303                 return 0;
2304         case IB_QP_CUR_STATE:
2305                 return 0;
2306         case IB_QP_EN_SQD_ASYNC_NOTIFY:
2307                 return 0;
2308         case IB_QP_ACCESS_FLAGS:
2309                 return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE |
2310                         MLX5_QP_OPTPAR_RAE;
2311         case IB_QP_PKEY_INDEX:
2312                 return MLX5_QP_OPTPAR_PKEY_INDEX;
2313         case IB_QP_PORT:
2314                 return MLX5_QP_OPTPAR_PRI_PORT;
2315         case IB_QP_QKEY:
2316                 return MLX5_QP_OPTPAR_Q_KEY;
2317         case IB_QP_AV:
2318                 return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH |
2319                         MLX5_QP_OPTPAR_PRI_PORT;
2320         case IB_QP_PATH_MTU:
2321                 return 0;
2322         case IB_QP_TIMEOUT:
2323                 return MLX5_QP_OPTPAR_ACK_TIMEOUT;
2324         case IB_QP_RETRY_CNT:
2325                 return MLX5_QP_OPTPAR_RETRY_COUNT;
2326         case IB_QP_RNR_RETRY:
2327                 return MLX5_QP_OPTPAR_RNR_RETRY;
2328         case IB_QP_RQ_PSN:
2329                 return 0;
2330         case IB_QP_MAX_QP_RD_ATOMIC:
2331                 return MLX5_QP_OPTPAR_SRA_MAX;
2332         case IB_QP_ALT_PATH:
2333                 return MLX5_QP_OPTPAR_ALT_ADDR_PATH;
2334         case IB_QP_MIN_RNR_TIMER:
2335                 return MLX5_QP_OPTPAR_RNR_TIMEOUT;
2336         case IB_QP_SQ_PSN:
2337                 return 0;
2338         case IB_QP_MAX_DEST_RD_ATOMIC:
2339                 return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE |
2340                         MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE;
2341         case IB_QP_PATH_MIG_STATE:
2342                 return MLX5_QP_OPTPAR_PM_STATE;
2343         case IB_QP_CAP:
2344                 return 0;
2345         case IB_QP_DEST_QPN:
2346                 return 0;
2347         }
2348         return 0;
2349 }
2350
2351 static int ib_mask_to_mlx5_opt(int ib_mask)
2352 {
2353         int result = 0;
2354         int i;
2355
2356         for (i = 0; i < 8 * sizeof(int); i++) {
2357                 if ((1 << i) & ib_mask)
2358                         result |= ib_nr_to_mlx5_nr(1 << i);
2359         }
2360
2361         return result;
2362 }
2363
2364 static int modify_raw_packet_qp_rq(struct mlx5_core_dev *dev,
2365                                    struct mlx5_ib_rq *rq, int new_state)
2366 {
2367         void *in;
2368         void *rqc;
2369         int inlen;
2370         int err;
2371
2372         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
2373         in = mlx5_vzalloc(inlen);
2374         if (!in)
2375                 return -ENOMEM;
2376
2377         MLX5_SET(modify_rq_in, in, rq_state, rq->state);
2378
2379         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
2380         MLX5_SET(rqc, rqc, state, new_state);
2381
2382         err = mlx5_core_modify_rq(dev, rq->base.mqp.qpn, in, inlen);
2383         if (err)
2384                 goto out;
2385
2386         rq->state = new_state;
2387
2388 out:
2389         kvfree(in);
2390         return err;
2391 }
2392
2393 static int modify_raw_packet_qp_sq(struct mlx5_core_dev *dev,
2394                                    struct mlx5_ib_sq *sq, int new_state)
2395 {
2396         void *in;
2397         void *sqc;
2398         int inlen;
2399         int err;
2400
2401         inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
2402         in = mlx5_vzalloc(inlen);
2403         if (!in)
2404                 return -ENOMEM;
2405
2406         MLX5_SET(modify_sq_in, in, sq_state, sq->state);
2407
2408         sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
2409         MLX5_SET(sqc, sqc, state, new_state);
2410
2411         err = mlx5_core_modify_sq(dev, sq->base.mqp.qpn, in, inlen);
2412         if (err)
2413                 goto out;
2414
2415         sq->state = new_state;
2416
2417 out:
2418         kvfree(in);
2419         return err;
2420 }
2421
2422 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2423                                 u16 operation)
2424 {
2425         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
2426         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
2427         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
2428         int rq_state;
2429         int sq_state;
2430         int err;
2431
2432         switch (operation) {
2433         case MLX5_CMD_OP_RST2INIT_QP:
2434                 rq_state = MLX5_RQC_STATE_RDY;
2435                 sq_state = MLX5_SQC_STATE_RDY;
2436                 break;
2437         case MLX5_CMD_OP_2ERR_QP:
2438                 rq_state = MLX5_RQC_STATE_ERR;
2439                 sq_state = MLX5_SQC_STATE_ERR;
2440                 break;
2441         case MLX5_CMD_OP_2RST_QP:
2442                 rq_state = MLX5_RQC_STATE_RST;
2443                 sq_state = MLX5_SQC_STATE_RST;
2444                 break;
2445         case MLX5_CMD_OP_INIT2INIT_QP:
2446         case MLX5_CMD_OP_INIT2RTR_QP:
2447         case MLX5_CMD_OP_RTR2RTS_QP:
2448         case MLX5_CMD_OP_RTS2RTS_QP:
2449                 /* Nothing to do here... */
2450                 return 0;
2451         default:
2452                 WARN_ON(1);
2453                 return -EINVAL;
2454         }
2455
2456         if (qp->rq.wqe_cnt) {
2457                 err =  modify_raw_packet_qp_rq(dev->mdev, rq, rq_state);
2458                 if (err)
2459                         return err;
2460         }
2461
2462         if (qp->sq.wqe_cnt)
2463                 return modify_raw_packet_qp_sq(dev->mdev, sq, sq_state);
2464
2465         return 0;
2466 }
2467
2468 static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
2469                                const struct ib_qp_attr *attr, int attr_mask,
2470                                enum ib_qp_state cur_state, enum ib_qp_state new_state)
2471 {
2472         static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = {
2473                 [MLX5_QP_STATE_RST] = {
2474                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2475                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2476                         [MLX5_QP_STATE_INIT]    = MLX5_CMD_OP_RST2INIT_QP,
2477                 },
2478                 [MLX5_QP_STATE_INIT]  = {
2479                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2480                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2481                         [MLX5_QP_STATE_INIT]    = MLX5_CMD_OP_INIT2INIT_QP,
2482                         [MLX5_QP_STATE_RTR]     = MLX5_CMD_OP_INIT2RTR_QP,
2483                 },
2484                 [MLX5_QP_STATE_RTR]   = {
2485                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2486                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2487                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_RTR2RTS_QP,
2488                 },
2489                 [MLX5_QP_STATE_RTS]   = {
2490                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2491                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2492                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_RTS2RTS_QP,
2493                 },
2494                 [MLX5_QP_STATE_SQD] = {
2495                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2496                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2497                 },
2498                 [MLX5_QP_STATE_SQER] = {
2499                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2500                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2501                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_SQERR2RTS_QP,
2502                 },
2503                 [MLX5_QP_STATE_ERR] = {
2504                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2505                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2506                 }
2507         };
2508
2509         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
2510         struct mlx5_ib_qp *qp = to_mqp(ibqp);
2511         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
2512         struct mlx5_ib_cq *send_cq, *recv_cq;
2513         struct mlx5_qp_context *context;
2514         struct mlx5_modify_qp_mbox_in *in;
2515         struct mlx5_ib_pd *pd;
2516         enum mlx5_qp_state mlx5_cur, mlx5_new;
2517         enum mlx5_qp_optpar optpar;
2518         int sqd_event;
2519         int mlx5_st;
2520         int err;
2521         u16 op;
2522
2523         in = kzalloc(sizeof(*in), GFP_KERNEL);
2524         if (!in)
2525                 return -ENOMEM;
2526
2527         context = &in->ctx;
2528         err = to_mlx5_st(ibqp->qp_type);
2529         if (err < 0) {
2530                 mlx5_ib_dbg(dev, "unsupported qp type %d\n", ibqp->qp_type);
2531                 goto out;
2532         }
2533
2534         context->flags = cpu_to_be32(err << 16);
2535
2536         if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
2537                 context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
2538         } else {
2539                 switch (attr->path_mig_state) {
2540                 case IB_MIG_MIGRATED:
2541                         context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
2542                         break;
2543                 case IB_MIG_REARM:
2544                         context->flags |= cpu_to_be32(MLX5_QP_PM_REARM << 11);
2545                         break;
2546                 case IB_MIG_ARMED:
2547                         context->flags |= cpu_to_be32(MLX5_QP_PM_ARMED << 11);
2548                         break;
2549                 }
2550         }
2551
2552         if (is_sqp(ibqp->qp_type)) {
2553                 context->mtu_msgmax = (IB_MTU_256 << 5) | 8;
2554         } else if (ibqp->qp_type == IB_QPT_UD ||
2555                    ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
2556                 context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
2557         } else if (attr_mask & IB_QP_PATH_MTU) {
2558                 if (attr->path_mtu < IB_MTU_256 ||
2559                     attr->path_mtu > IB_MTU_4096) {
2560                         mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu);
2561                         err = -EINVAL;
2562                         goto out;
2563                 }
2564                 context->mtu_msgmax = (attr->path_mtu << 5) |
2565                                       (u8)MLX5_CAP_GEN(dev->mdev, log_max_msg);
2566         }
2567
2568         if (attr_mask & IB_QP_DEST_QPN)
2569                 context->log_pg_sz_remote_qpn = cpu_to_be32(attr->dest_qp_num);
2570
2571         if (attr_mask & IB_QP_PKEY_INDEX)
2572                 context->pri_path.pkey_index = cpu_to_be16(attr->pkey_index);
2573
2574         /* todo implement counter_index functionality */
2575
2576         if (is_sqp(ibqp->qp_type))
2577                 context->pri_path.port = qp->port;
2578
2579         if (attr_mask & IB_QP_PORT)
2580                 context->pri_path.port = attr->port_num;
2581
2582         if (attr_mask & IB_QP_AV) {
2583                 err = mlx5_set_path(dev, qp, &attr->ah_attr, &context->pri_path,
2584                                     attr_mask & IB_QP_PORT ? attr->port_num : qp->port,
2585                                     attr_mask, 0, attr, false);
2586                 if (err)
2587                         goto out;
2588         }
2589
2590         if (attr_mask & IB_QP_TIMEOUT)
2591                 context->pri_path.ackto_lt |= attr->timeout << 3;
2592
2593         if (attr_mask & IB_QP_ALT_PATH) {
2594                 err = mlx5_set_path(dev, qp, &attr->alt_ah_attr,
2595                                     &context->alt_path,
2596                                     attr->alt_port_num,
2597                                     attr_mask | IB_QP_PKEY_INDEX | IB_QP_TIMEOUT,
2598                                     0, attr, true);
2599                 if (err)
2600                         goto out;
2601         }
2602
2603         pd = get_pd(qp);
2604         get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
2605                 &send_cq, &recv_cq);
2606
2607         context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
2608         context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0;
2609         context->cqn_recv = recv_cq ? cpu_to_be32(recv_cq->mcq.cqn) : 0;
2610         context->params1  = cpu_to_be32(MLX5_IB_ACK_REQ_FREQ << 28);
2611
2612         if (attr_mask & IB_QP_RNR_RETRY)
2613                 context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
2614
2615         if (attr_mask & IB_QP_RETRY_CNT)
2616                 context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
2617
2618         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
2619                 if (attr->max_rd_atomic)
2620                         context->params1 |=
2621                                 cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
2622         }
2623
2624         if (attr_mask & IB_QP_SQ_PSN)
2625                 context->next_send_psn = cpu_to_be32(attr->sq_psn);
2626
2627         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
2628                 if (attr->max_dest_rd_atomic)
2629                         context->params2 |=
2630                                 cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
2631         }
2632
2633         if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC))
2634                 context->params2 |= to_mlx5_access_flags(qp, attr, attr_mask);
2635
2636         if (attr_mask & IB_QP_MIN_RNR_TIMER)
2637                 context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
2638
2639         if (attr_mask & IB_QP_RQ_PSN)
2640                 context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
2641
2642         if (attr_mask & IB_QP_QKEY)
2643                 context->qkey = cpu_to_be32(attr->qkey);
2644
2645         if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
2646                 context->db_rec_addr = cpu_to_be64(qp->db.dma);
2647
2648         if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD  &&
2649             attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify)
2650                 sqd_event = 1;
2651         else
2652                 sqd_event = 0;
2653
2654         if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
2655                 context->sq_crq_size |= cpu_to_be16(1 << 4);
2656
2657         if (qp->flags & MLX5_IB_QP_SQPN_QP1)
2658                 context->deth_sqpn = cpu_to_be32(1);
2659
2660         mlx5_cur = to_mlx5_state(cur_state);
2661         mlx5_new = to_mlx5_state(new_state);
2662         mlx5_st = to_mlx5_st(ibqp->qp_type);
2663         if (mlx5_st < 0)
2664                 goto out;
2665
2666         /* If moving to a reset or error state, we must disable page faults on
2667          * this QP and flush all current page faults. Otherwise a stale page
2668          * fault may attempt to work on this QP after it is reset and moved
2669          * again to RTS, and may cause the driver and the device to get out of
2670          * sync. */
2671         if (cur_state != IB_QPS_RESET && cur_state != IB_QPS_ERR &&
2672             (new_state == IB_QPS_RESET || new_state == IB_QPS_ERR) &&
2673             (qp->ibqp.qp_type != IB_QPT_RAW_PACKET))
2674                 mlx5_ib_qp_disable_pagefaults(qp);
2675
2676         if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE ||
2677             !optab[mlx5_cur][mlx5_new])
2678                 goto out;
2679
2680         op = optab[mlx5_cur][mlx5_new];
2681         optpar = ib_mask_to_mlx5_opt(attr_mask);
2682         optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
2683         in->optparam = cpu_to_be32(optpar);
2684
2685         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET)
2686                 err = modify_raw_packet_qp(dev, qp, op);
2687         else
2688                 err = mlx5_core_qp_modify(dev->mdev, op, in, sqd_event,
2689                                           &base->mqp);
2690         if (err)
2691                 goto out;
2692
2693         if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT &&
2694             (qp->ibqp.qp_type != IB_QPT_RAW_PACKET))
2695                 mlx5_ib_qp_enable_pagefaults(qp);
2696
2697         qp->state = new_state;
2698
2699         if (attr_mask & IB_QP_ACCESS_FLAGS)
2700                 qp->trans_qp.atomic_rd_en = attr->qp_access_flags;
2701         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
2702                 qp->trans_qp.resp_depth = attr->max_dest_rd_atomic;
2703         if (attr_mask & IB_QP_PORT)
2704                 qp->port = attr->port_num;
2705         if (attr_mask & IB_QP_ALT_PATH)
2706                 qp->trans_qp.alt_port = attr->alt_port_num;
2707
2708         /*
2709          * If we moved a kernel QP to RESET, clean up all old CQ
2710          * entries and reinitialize the QP.
2711          */
2712         if (new_state == IB_QPS_RESET && !ibqp->uobject) {
2713                 mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
2714                                  ibqp->srq ? to_msrq(ibqp->srq) : NULL);
2715                 if (send_cq != recv_cq)
2716                         mlx5_ib_cq_clean(send_cq, base->mqp.qpn, NULL);
2717
2718                 qp->rq.head = 0;
2719                 qp->rq.tail = 0;
2720                 qp->sq.head = 0;
2721                 qp->sq.tail = 0;
2722                 qp->sq.cur_post = 0;
2723                 qp->sq.last_poll = 0;
2724                 qp->db.db[MLX5_RCV_DBR] = 0;
2725                 qp->db.db[MLX5_SND_DBR] = 0;
2726         }
2727
2728 out:
2729         kfree(in);
2730         return err;
2731 }
2732
2733 int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2734                       int attr_mask, struct ib_udata *udata)
2735 {
2736         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
2737         struct mlx5_ib_qp *qp = to_mqp(ibqp);
2738         enum ib_qp_type qp_type;
2739         enum ib_qp_state cur_state, new_state;
2740         int err = -EINVAL;
2741         int port;
2742         enum rdma_link_layer ll = IB_LINK_LAYER_UNSPECIFIED;
2743
2744         if (ibqp->rwq_ind_tbl)
2745                 return -ENOSYS;
2746
2747         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
2748                 return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask);
2749
2750         qp_type = (unlikely(ibqp->qp_type == MLX5_IB_QPT_HW_GSI)) ?
2751                 IB_QPT_GSI : ibqp->qp_type;
2752
2753         mutex_lock(&qp->mutex);
2754
2755         cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
2756         new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
2757
2758         if (!(cur_state == new_state && cur_state == IB_QPS_RESET)) {
2759                 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
2760                 ll = dev->ib_dev.get_link_layer(&dev->ib_dev, port);
2761         }
2762
2763         if (qp_type != MLX5_IB_QPT_REG_UMR &&
2764             !ib_modify_qp_is_ok(cur_state, new_state, qp_type, attr_mask, ll)) {
2765                 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
2766                             cur_state, new_state, ibqp->qp_type, attr_mask);
2767                 goto out;
2768         }
2769
2770         if ((attr_mask & IB_QP_PORT) &&
2771             (attr->port_num == 0 ||
2772              attr->port_num > MLX5_CAP_GEN(dev->mdev, num_ports))) {
2773                 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
2774                             attr->port_num, dev->num_ports);
2775                 goto out;
2776         }
2777
2778         if (attr_mask & IB_QP_PKEY_INDEX) {
2779                 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
2780                 if (attr->pkey_index >=
2781                     dev->mdev->port_caps[port - 1].pkey_table_len) {
2782                         mlx5_ib_dbg(dev, "invalid pkey index %d\n",
2783                                     attr->pkey_index);
2784                         goto out;
2785                 }
2786         }
2787
2788         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
2789             attr->max_rd_atomic >
2790             (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_res_qp))) {
2791                 mlx5_ib_dbg(dev, "invalid max_rd_atomic value %d\n",
2792                             attr->max_rd_atomic);
2793                 goto out;
2794         }
2795
2796         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
2797             attr->max_dest_rd_atomic >
2798             (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_req_qp))) {
2799                 mlx5_ib_dbg(dev, "invalid max_dest_rd_atomic value %d\n",
2800                             attr->max_dest_rd_atomic);
2801                 goto out;
2802         }
2803
2804         if (cur_state == new_state && cur_state == IB_QPS_RESET) {
2805                 err = 0;
2806                 goto out;
2807         }
2808
2809         err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state, new_state);
2810
2811 out:
2812         mutex_unlock(&qp->mutex);
2813         return err;
2814 }
2815
2816 static int mlx5_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq)
2817 {
2818         struct mlx5_ib_cq *cq;
2819         unsigned cur;
2820
2821         cur = wq->head - wq->tail;
2822         if (likely(cur + nreq < wq->max_post))
2823                 return 0;
2824
2825         cq = to_mcq(ib_cq);
2826         spin_lock(&cq->lock);
2827         cur = wq->head - wq->tail;
2828         spin_unlock(&cq->lock);
2829
2830         return cur + nreq >= wq->max_post;
2831 }
2832
2833 static __always_inline void set_raddr_seg(struct mlx5_wqe_raddr_seg *rseg,
2834                                           u64 remote_addr, u32 rkey)
2835 {
2836         rseg->raddr    = cpu_to_be64(remote_addr);
2837         rseg->rkey     = cpu_to_be32(rkey);
2838         rseg->reserved = 0;
2839 }
2840
2841 static void *set_eth_seg(struct mlx5_wqe_eth_seg *eseg,
2842                          struct ib_send_wr *wr, void *qend,
2843                          struct mlx5_ib_qp *qp, int *size)
2844 {
2845         void *seg = eseg;
2846
2847         memset(eseg, 0, sizeof(struct mlx5_wqe_eth_seg));
2848
2849         if (wr->send_flags & IB_SEND_IP_CSUM)
2850                 eseg->cs_flags = MLX5_ETH_WQE_L3_CSUM |
2851                                  MLX5_ETH_WQE_L4_CSUM;
2852
2853         seg += sizeof(struct mlx5_wqe_eth_seg);
2854         *size += sizeof(struct mlx5_wqe_eth_seg) / 16;
2855
2856         if (wr->opcode == IB_WR_LSO) {
2857                 struct ib_ud_wr *ud_wr = container_of(wr, struct ib_ud_wr, wr);
2858                 int size_of_inl_hdr_start = sizeof(eseg->inline_hdr_start);
2859                 u64 left, leftlen, copysz;
2860                 void *pdata = ud_wr->header;
2861
2862                 left = ud_wr->hlen;
2863                 eseg->mss = cpu_to_be16(ud_wr->mss);
2864                 eseg->inline_hdr_sz = cpu_to_be16(left);
2865
2866                 /*
2867                  * check if there is space till the end of queue, if yes,
2868                  * copy all in one shot, otherwise copy till the end of queue,
2869                  * rollback and than the copy the left
2870                  */
2871                 leftlen = qend - (void *)eseg->inline_hdr_start;
2872                 copysz = min_t(u64, leftlen, left);
2873
2874                 memcpy(seg - size_of_inl_hdr_start, pdata, copysz);
2875
2876                 if (likely(copysz > size_of_inl_hdr_start)) {
2877                         seg += ALIGN(copysz - size_of_inl_hdr_start, 16);
2878                         *size += ALIGN(copysz - size_of_inl_hdr_start, 16) / 16;
2879                 }
2880
2881                 if (unlikely(copysz < left)) { /* the last wqe in the queue */
2882                         seg = mlx5_get_send_wqe(qp, 0);
2883                         left -= copysz;
2884                         pdata += copysz;
2885                         memcpy(seg, pdata, left);
2886                         seg += ALIGN(left, 16);
2887                         *size += ALIGN(left, 16) / 16;
2888                 }
2889         }
2890
2891         return seg;
2892 }
2893
2894 static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg,
2895                              struct ib_send_wr *wr)
2896 {
2897         memcpy(&dseg->av, &to_mah(ud_wr(wr)->ah)->av, sizeof(struct mlx5_av));
2898         dseg->av.dqp_dct = cpu_to_be32(ud_wr(wr)->remote_qpn | MLX5_EXTENDED_UD_AV);
2899         dseg->av.key.qkey.qkey = cpu_to_be32(ud_wr(wr)->remote_qkey);
2900 }
2901
2902 static void set_data_ptr_seg(struct mlx5_wqe_data_seg *dseg, struct ib_sge *sg)
2903 {
2904         dseg->byte_count = cpu_to_be32(sg->length);
2905         dseg->lkey       = cpu_to_be32(sg->lkey);
2906         dseg->addr       = cpu_to_be64(sg->addr);
2907 }
2908
2909 static __be16 get_klm_octo(int npages)
2910 {
2911         return cpu_to_be16(ALIGN(npages, 8) / 2);
2912 }
2913
2914 static __be64 frwr_mkey_mask(void)
2915 {
2916         u64 result;
2917
2918         result = MLX5_MKEY_MASK_LEN             |
2919                 MLX5_MKEY_MASK_PAGE_SIZE        |
2920                 MLX5_MKEY_MASK_START_ADDR       |
2921                 MLX5_MKEY_MASK_EN_RINVAL        |
2922                 MLX5_MKEY_MASK_KEY              |
2923                 MLX5_MKEY_MASK_LR               |
2924                 MLX5_MKEY_MASK_LW               |
2925                 MLX5_MKEY_MASK_RR               |
2926                 MLX5_MKEY_MASK_RW               |
2927                 MLX5_MKEY_MASK_A                |
2928                 MLX5_MKEY_MASK_SMALL_FENCE      |
2929                 MLX5_MKEY_MASK_FREE;
2930
2931         return cpu_to_be64(result);
2932 }
2933
2934 static __be64 sig_mkey_mask(void)
2935 {
2936         u64 result;
2937
2938         result = MLX5_MKEY_MASK_LEN             |
2939                 MLX5_MKEY_MASK_PAGE_SIZE        |
2940                 MLX5_MKEY_MASK_START_ADDR       |
2941                 MLX5_MKEY_MASK_EN_SIGERR        |
2942                 MLX5_MKEY_MASK_EN_RINVAL        |
2943                 MLX5_MKEY_MASK_KEY              |
2944                 MLX5_MKEY_MASK_LR               |
2945                 MLX5_MKEY_MASK_LW               |
2946                 MLX5_MKEY_MASK_RR               |
2947                 MLX5_MKEY_MASK_RW               |
2948                 MLX5_MKEY_MASK_SMALL_FENCE      |
2949                 MLX5_MKEY_MASK_FREE             |
2950                 MLX5_MKEY_MASK_BSF_EN;
2951
2952         return cpu_to_be64(result);
2953 }
2954
2955 static void set_reg_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr,
2956                                 struct mlx5_ib_mr *mr)
2957 {
2958         int ndescs = mr->ndescs;
2959
2960         memset(umr, 0, sizeof(*umr));
2961
2962         if (mr->access_mode == MLX5_ACCESS_MODE_KLM)
2963                 /* KLMs take twice the size of MTTs */
2964                 ndescs *= 2;
2965
2966         umr->flags = MLX5_UMR_CHECK_NOT_FREE;
2967         umr->klm_octowords = get_klm_octo(ndescs);
2968         umr->mkey_mask = frwr_mkey_mask();
2969 }
2970
2971 static void set_linv_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr)
2972 {
2973         memset(umr, 0, sizeof(*umr));
2974         umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
2975         umr->flags = 1 << 7;
2976 }
2977
2978 static __be64 get_umr_reg_mr_mask(void)
2979 {
2980         u64 result;
2981
2982         result = MLX5_MKEY_MASK_LEN             |
2983                  MLX5_MKEY_MASK_PAGE_SIZE       |
2984                  MLX5_MKEY_MASK_START_ADDR      |
2985                  MLX5_MKEY_MASK_PD              |
2986                  MLX5_MKEY_MASK_LR              |
2987                  MLX5_MKEY_MASK_LW              |
2988                  MLX5_MKEY_MASK_KEY             |
2989                  MLX5_MKEY_MASK_RR              |
2990                  MLX5_MKEY_MASK_RW              |
2991                  MLX5_MKEY_MASK_A               |
2992                  MLX5_MKEY_MASK_FREE;
2993
2994         return cpu_to_be64(result);
2995 }
2996
2997 static __be64 get_umr_unreg_mr_mask(void)
2998 {
2999         u64 result;
3000
3001         result = MLX5_MKEY_MASK_FREE;
3002
3003         return cpu_to_be64(result);
3004 }
3005
3006 static __be64 get_umr_update_mtt_mask(void)
3007 {
3008         u64 result;
3009
3010         result = MLX5_MKEY_MASK_FREE;
3011
3012         return cpu_to_be64(result);
3013 }
3014
3015 static __be64 get_umr_update_translation_mask(void)
3016 {
3017         u64 result;
3018
3019         result = MLX5_MKEY_MASK_LEN |
3020                  MLX5_MKEY_MASK_PAGE_SIZE |
3021                  MLX5_MKEY_MASK_START_ADDR |
3022                  MLX5_MKEY_MASK_KEY |
3023                  MLX5_MKEY_MASK_FREE;
3024
3025         return cpu_to_be64(result);
3026 }
3027
3028 static __be64 get_umr_update_access_mask(void)
3029 {
3030         u64 result;
3031
3032         result = MLX5_MKEY_MASK_LW |
3033                  MLX5_MKEY_MASK_RR |
3034                  MLX5_MKEY_MASK_RW |
3035                  MLX5_MKEY_MASK_A |
3036                  MLX5_MKEY_MASK_KEY |
3037                  MLX5_MKEY_MASK_FREE;
3038
3039         return cpu_to_be64(result);
3040 }
3041
3042 static __be64 get_umr_update_pd_mask(void)
3043 {
3044         u64 result;
3045
3046         result = MLX5_MKEY_MASK_PD |
3047                  MLX5_MKEY_MASK_KEY |
3048                  MLX5_MKEY_MASK_FREE;
3049
3050         return cpu_to_be64(result);
3051 }
3052
3053 static void set_reg_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
3054                                 struct ib_send_wr *wr)
3055 {
3056         struct mlx5_umr_wr *umrwr = umr_wr(wr);
3057
3058         memset(umr, 0, sizeof(*umr));
3059
3060         if (wr->send_flags & MLX5_IB_SEND_UMR_FAIL_IF_FREE)
3061                 umr->flags = MLX5_UMR_CHECK_FREE; /* fail if free */
3062         else
3063                 umr->flags = MLX5_UMR_CHECK_NOT_FREE; /* fail if not free */
3064
3065         if (!(wr->send_flags & MLX5_IB_SEND_UMR_UNREG)) {
3066                 umr->klm_octowords = get_klm_octo(umrwr->npages);
3067                 if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_MTT) {
3068                         umr->mkey_mask = get_umr_update_mtt_mask();
3069                         umr->bsf_octowords = get_klm_octo(umrwr->target.offset);
3070                         umr->flags |= MLX5_UMR_TRANSLATION_OFFSET_EN;
3071                 }
3072                 if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_TRANSLATION)
3073                         umr->mkey_mask |= get_umr_update_translation_mask();
3074                 if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_ACCESS)
3075                         umr->mkey_mask |= get_umr_update_access_mask();
3076                 if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_PD)
3077                         umr->mkey_mask |= get_umr_update_pd_mask();
3078                 if (!umr->mkey_mask)
3079                         umr->mkey_mask = get_umr_reg_mr_mask();
3080         } else {
3081                 umr->mkey_mask = get_umr_unreg_mr_mask();
3082         }
3083
3084         if (!wr->num_sge)
3085                 umr->flags |= MLX5_UMR_INLINE;
3086 }
3087
3088 static u8 get_umr_flags(int acc)
3089 {
3090         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC       : 0) |
3091                (acc & IB_ACCESS_REMOTE_WRITE  ? MLX5_PERM_REMOTE_WRITE : 0) |
3092                (acc & IB_ACCESS_REMOTE_READ   ? MLX5_PERM_REMOTE_READ  : 0) |
3093                (acc & IB_ACCESS_LOCAL_WRITE   ? MLX5_PERM_LOCAL_WRITE  : 0) |
3094                 MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN;
3095 }
3096
3097 static void set_reg_mkey_seg(struct mlx5_mkey_seg *seg,
3098                              struct mlx5_ib_mr *mr,
3099                              u32 key, int access)
3100 {
3101         int ndescs = ALIGN(mr->ndescs, 8) >> 1;
3102
3103         memset(seg, 0, sizeof(*seg));
3104
3105         if (mr->access_mode == MLX5_ACCESS_MODE_MTT)
3106                 seg->log2_page_size = ilog2(mr->ibmr.page_size);
3107         else if (mr->access_mode == MLX5_ACCESS_MODE_KLM)
3108                 /* KLMs take twice the size of MTTs */
3109                 ndescs *= 2;
3110
3111         seg->flags = get_umr_flags(access) | mr->access_mode;
3112         seg->qpn_mkey7_0 = cpu_to_be32((key & 0xff) | 0xffffff00);
3113         seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL);
3114         seg->start_addr = cpu_to_be64(mr->ibmr.iova);
3115         seg->len = cpu_to_be64(mr->ibmr.length);
3116         seg->xlt_oct_size = cpu_to_be32(ndescs);
3117 }
3118
3119 static void set_linv_mkey_seg(struct mlx5_mkey_seg *seg)
3120 {
3121         memset(seg, 0, sizeof(*seg));
3122         seg->status = MLX5_MKEY_STATUS_FREE;
3123 }
3124
3125 static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr)
3126 {
3127         struct mlx5_umr_wr *umrwr = umr_wr(wr);
3128
3129         memset(seg, 0, sizeof(*seg));
3130         if (wr->send_flags & MLX5_IB_SEND_UMR_UNREG) {
3131                 seg->status = MLX5_MKEY_STATUS_FREE;
3132                 return;
3133         }
3134
3135         seg->flags = convert_access(umrwr->access_flags);
3136         if (!(wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_MTT)) {
3137                 if (umrwr->pd)
3138                         seg->flags_pd = cpu_to_be32(to_mpd(umrwr->pd)->pdn);
3139                 seg->start_addr = cpu_to_be64(umrwr->target.virt_addr);
3140         }
3141         seg->len = cpu_to_be64(umrwr->length);
3142         seg->log2_page_size = umrwr->page_shift;
3143         seg->qpn_mkey7_0 = cpu_to_be32(0xffffff00 |
3144                                        mlx5_mkey_variant(umrwr->mkey));
3145 }
3146
3147 static void set_reg_data_seg(struct mlx5_wqe_data_seg *dseg,
3148                              struct mlx5_ib_mr *mr,
3149                              struct mlx5_ib_pd *pd)
3150 {
3151         int bcount = mr->desc_size * mr->ndescs;
3152
3153         dseg->addr = cpu_to_be64(mr->desc_map);
3154         dseg->byte_count = cpu_to_be32(ALIGN(bcount, 64));
3155         dseg->lkey = cpu_to_be32(pd->ibpd.local_dma_lkey);
3156 }
3157
3158 static __be32 send_ieth(struct ib_send_wr *wr)
3159 {
3160         switch (wr->opcode) {
3161         case IB_WR_SEND_WITH_IMM:
3162         case IB_WR_RDMA_WRITE_WITH_IMM:
3163                 return wr->ex.imm_data;
3164
3165         case IB_WR_SEND_WITH_INV:
3166                 return cpu_to_be32(wr->ex.invalidate_rkey);
3167
3168         default:
3169                 return 0;
3170         }
3171 }
3172
3173 static u8 calc_sig(void *wqe, int size)
3174 {
3175         u8 *p = wqe;
3176         u8 res = 0;
3177         int i;
3178
3179         for (i = 0; i < size; i++)
3180                 res ^= p[i];
3181
3182         return ~res;
3183 }
3184
3185 static u8 wq_sig(void *wqe)
3186 {
3187         return calc_sig(wqe, (*((u8 *)wqe + 8) & 0x3f) << 4);
3188 }
3189
3190 static int set_data_inl_seg(struct mlx5_ib_qp *qp, struct ib_send_wr *wr,
3191                             void *wqe, int *sz)
3192 {
3193         struct mlx5_wqe_inline_seg *seg;
3194         void *qend = qp->sq.qend;
3195         void *addr;
3196         int inl = 0;
3197         int copy;
3198         int len;
3199         int i;
3200
3201         seg = wqe;
3202         wqe += sizeof(*seg);
3203         for (i = 0; i < wr->num_sge; i++) {
3204                 addr = (void *)(unsigned long)(wr->sg_list[i].addr);
3205                 len  = wr->sg_list[i].length;
3206                 inl += len;
3207
3208                 if (unlikely(inl > qp->max_inline_data))
3209                         return -ENOMEM;
3210
3211                 if (unlikely(wqe + len > qend)) {
3212                         copy = qend - wqe;
3213                         memcpy(wqe, addr, copy);
3214                         addr += copy;
3215                         len -= copy;
3216                         wqe = mlx5_get_send_wqe(qp, 0);
3217                 }
3218                 memcpy(wqe, addr, len);
3219                 wqe += len;
3220         }
3221
3222         seg->byte_count = cpu_to_be32(inl | MLX5_INLINE_SEG);
3223
3224         *sz = ALIGN(inl + sizeof(seg->byte_count), 16) / 16;
3225
3226         return 0;
3227 }
3228
3229 static u16 prot_field_size(enum ib_signature_type type)
3230 {
3231         switch (type) {
3232         case IB_SIG_TYPE_T10_DIF:
3233                 return MLX5_DIF_SIZE;
3234         default:
3235                 return 0;
3236         }
3237 }
3238
3239 static u8 bs_selector(int block_size)
3240 {
3241         switch (block_size) {
3242         case 512:           return 0x1;
3243         case 520:           return 0x2;
3244         case 4096:          return 0x3;
3245         case 4160:          return 0x4;
3246         case 1073741824:    return 0x5;
3247         default:            return 0;
3248         }
3249 }
3250
3251 static void mlx5_fill_inl_bsf(struct ib_sig_domain *domain,
3252                               struct mlx5_bsf_inl *inl)
3253 {
3254         /* Valid inline section and allow BSF refresh */
3255         inl->vld_refresh = cpu_to_be16(MLX5_BSF_INL_VALID |
3256                                        MLX5_BSF_REFRESH_DIF);
3257         inl->dif_apptag = cpu_to_be16(domain->sig.dif.app_tag);
3258         inl->dif_reftag = cpu_to_be32(domain->sig.dif.ref_tag);
3259         /* repeating block */
3260         inl->rp_inv_seed = MLX5_BSF_REPEAT_BLOCK;
3261         inl->sig_type = domain->sig.dif.bg_type == IB_T10DIF_CRC ?
3262                         MLX5_DIF_CRC : MLX5_DIF_IPCS;
3263
3264         if (domain->sig.dif.ref_remap)
3265                 inl->dif_inc_ref_guard_check |= MLX5_BSF_INC_REFTAG;
3266
3267         if (domain->sig.dif.app_escape) {
3268                 if (domain->sig.dif.ref_escape)
3269                         inl->dif_inc_ref_guard_check |= MLX5_BSF_APPREF_ESCAPE;
3270                 else
3271                         inl->dif_inc_ref_guard_check |= MLX5_BSF_APPTAG_ESCAPE;
3272         }
3273
3274         inl->dif_app_bitmask_check =
3275                 cpu_to_be16(domain->sig.dif.apptag_check_mask);
3276 }
3277
3278 static int mlx5_set_bsf(struct ib_mr *sig_mr,
3279                         struct ib_sig_attrs *sig_attrs,
3280                         struct mlx5_bsf *bsf, u32 data_size)
3281 {
3282         struct mlx5_core_sig_ctx *msig = to_mmr(sig_mr)->sig;
3283         struct mlx5_bsf_basic *basic = &bsf->basic;
3284         struct ib_sig_domain *mem = &sig_attrs->mem;
3285         struct ib_sig_domain *wire = &sig_attrs->wire;
3286
3287         memset(bsf, 0, sizeof(*bsf));
3288
3289         /* Basic + Extended + Inline */
3290         basic->bsf_size_sbs = 1 << 7;
3291         /* Input domain check byte mask */
3292         basic->check_byte_mask = sig_attrs->check_mask;
3293         basic->raw_data_size = cpu_to_be32(data_size);
3294
3295         /* Memory domain */
3296         switch (sig_attrs->mem.sig_type) {
3297         case IB_SIG_TYPE_NONE:
3298                 break;
3299         case IB_SIG_TYPE_T10_DIF:
3300                 basic->mem.bs_selector = bs_selector(mem->sig.dif.pi_interval);
3301                 basic->m_bfs_psv = cpu_to_be32(msig->psv_memory.psv_idx);
3302                 mlx5_fill_inl_bsf(mem, &bsf->m_inl);
3303                 break;
3304         default:
3305                 return -EINVAL;
3306         }
3307
3308         /* Wire domain */
3309         switch (sig_attrs->wire.sig_type) {
3310         case IB_SIG_TYPE_NONE:
3311                 break;
3312         case IB_SIG_TYPE_T10_DIF:
3313                 if (mem->sig.dif.pi_interval == wire->sig.dif.pi_interval &&
3314                     mem->sig_type == wire->sig_type) {
3315                         /* Same block structure */
3316                         basic->bsf_size_sbs |= 1 << 4;
3317                         if (mem->sig.dif.bg_type == wire->sig.dif.bg_type)
3318                                 basic->wire.copy_byte_mask |= MLX5_CPY_GRD_MASK;
3319                         if (mem->sig.dif.app_tag == wire->sig.dif.app_tag)
3320                                 basic->wire.copy_byte_mask |= MLX5_CPY_APP_MASK;
3321                         if (mem->sig.dif.ref_tag == wire->sig.dif.ref_tag)
3322                                 basic->wire.copy_byte_mask |= MLX5_CPY_REF_MASK;
3323                 } else
3324                         basic->wire.bs_selector = bs_selector(wire->sig.dif.pi_interval);
3325
3326                 basic->w_bfs_psv = cpu_to_be32(msig->psv_wire.psv_idx);
3327                 mlx5_fill_inl_bsf(wire, &bsf->w_inl);
3328                 break;
3329         default:
3330                 return -EINVAL;
3331         }
3332
3333         return 0;
3334 }
3335
3336 static int set_sig_data_segment(struct ib_sig_handover_wr *wr,
3337                                 struct mlx5_ib_qp *qp, void **seg, int *size)
3338 {
3339         struct ib_sig_attrs *sig_attrs = wr->sig_attrs;
3340         struct ib_mr *sig_mr = wr->sig_mr;
3341         struct mlx5_bsf *bsf;
3342         u32 data_len = wr->wr.sg_list->length;
3343         u32 data_key = wr->wr.sg_list->lkey;
3344         u64 data_va = wr->wr.sg_list->addr;
3345         int ret;
3346         int wqe_size;
3347
3348         if (!wr->prot ||
3349             (data_key == wr->prot->lkey &&
3350              data_va == wr->prot->addr &&
3351              data_len == wr->prot->length)) {
3352                 /**
3353                  * Source domain doesn't contain signature information
3354                  * or data and protection are interleaved in memory.
3355                  * So need construct:
3356                  *                  ------------------
3357                  *                 |     data_klm     |
3358                  *                  ------------------
3359                  *                 |       BSF        |
3360                  *                  ------------------
3361                  **/
3362                 struct mlx5_klm *data_klm = *seg;
3363
3364                 data_klm->bcount = cpu_to_be32(data_len);
3365                 data_klm->key = cpu_to_be32(data_key);
3366                 data_klm->va = cpu_to_be64(data_va);
3367                 wqe_size = ALIGN(sizeof(*data_klm), 64);
3368         } else {
3369                 /**
3370                  * Source domain contains signature information
3371                  * So need construct a strided block format:
3372                  *               ---------------------------
3373                  *              |     stride_block_ctrl     |
3374                  *               ---------------------------
3375                  *              |          data_klm         |
3376                  *               ---------------------------
3377                  *              |          prot_klm         |
3378                  *               ---------------------------
3379                  *              |             BSF           |
3380                  *               ---------------------------
3381                  **/
3382                 struct mlx5_stride_block_ctrl_seg *sblock_ctrl;
3383                 struct mlx5_stride_block_entry *data_sentry;
3384                 struct mlx5_stride_block_entry *prot_sentry;
3385                 u32 prot_key = wr->prot->lkey;
3386                 u64 prot_va = wr->prot->addr;
3387                 u16 block_size = sig_attrs->mem.sig.dif.pi_interval;
3388                 int prot_size;
3389
3390                 sblock_ctrl = *seg;
3391                 data_sentry = (void *)sblock_ctrl + sizeof(*sblock_ctrl);
3392                 prot_sentry = (void *)data_sentry + sizeof(*data_sentry);
3393
3394                 prot_size = prot_field_size(sig_attrs->mem.sig_type);
3395                 if (!prot_size) {
3396                         pr_err("Bad block size given: %u\n", block_size);
3397                         return -EINVAL;
3398                 }
3399                 sblock_ctrl->bcount_per_cycle = cpu_to_be32(block_size +
3400                                                             prot_size);
3401                 sblock_ctrl->op = cpu_to_be32(MLX5_STRIDE_BLOCK_OP);
3402                 sblock_ctrl->repeat_count = cpu_to_be32(data_len / block_size);
3403                 sblock_ctrl->num_entries = cpu_to_be16(2);
3404
3405                 data_sentry->bcount = cpu_to_be16(block_size);
3406                 data_sentry->key = cpu_to_be32(data_key);
3407                 data_sentry->va = cpu_to_be64(data_va);
3408                 data_sentry->stride = cpu_to_be16(block_size);
3409
3410                 prot_sentry->bcount = cpu_to_be16(prot_size);
3411                 prot_sentry->key = cpu_to_be32(prot_key);
3412                 prot_sentry->va = cpu_to_be64(prot_va);
3413                 prot_sentry->stride = cpu_to_be16(prot_size);
3414
3415                 wqe_size = ALIGN(sizeof(*sblock_ctrl) + sizeof(*data_sentry) +
3416                                  sizeof(*prot_sentry), 64);
3417         }
3418
3419         *seg += wqe_size;
3420         *size += wqe_size / 16;
3421         if (unlikely((*seg == qp->sq.qend)))
3422                 *seg = mlx5_get_send_wqe(qp, 0);
3423
3424         bsf = *seg;
3425         ret = mlx5_set_bsf(sig_mr, sig_attrs, bsf, data_len);
3426         if (ret)
3427                 return -EINVAL;
3428
3429         *seg += sizeof(*bsf);
3430         *size += sizeof(*bsf) / 16;
3431         if (unlikely((*seg == qp->sq.qend)))
3432                 *seg = mlx5_get_send_wqe(qp, 0);
3433
3434         return 0;
3435 }
3436
3437 static void set_sig_mkey_segment(struct mlx5_mkey_seg *seg,
3438                                  struct ib_sig_handover_wr *wr, u32 nelements,
3439                                  u32 length, u32 pdn)
3440 {
3441         struct ib_mr *sig_mr = wr->sig_mr;
3442         u32 sig_key = sig_mr->rkey;
3443         u8 sigerr = to_mmr(sig_mr)->sig->sigerr_count & 1;
3444
3445         memset(seg, 0, sizeof(*seg));
3446
3447         seg->flags = get_umr_flags(wr->access_flags) |
3448                                    MLX5_ACCESS_MODE_KLM;
3449         seg->qpn_mkey7_0 = cpu_to_be32((sig_key & 0xff) | 0xffffff00);
3450         seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL | sigerr << 26 |
3451                                     MLX5_MKEY_BSF_EN | pdn);
3452         seg->len = cpu_to_be64(length);
3453         seg->xlt_oct_size = cpu_to_be32(be16_to_cpu(get_klm_octo(nelements)));
3454         seg->bsfs_octo_size = cpu_to_be32(MLX5_MKEY_BSF_OCTO_SIZE);
3455 }
3456
3457 static void set_sig_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
3458                                 u32 nelements)
3459 {
3460         memset(umr, 0, sizeof(*umr));
3461
3462         umr->flags = MLX5_FLAGS_INLINE | MLX5_FLAGS_CHECK_FREE;
3463         umr->klm_octowords = get_klm_octo(nelements);
3464         umr->bsf_octowords = cpu_to_be16(MLX5_MKEY_BSF_OCTO_SIZE);
3465         umr->mkey_mask = sig_mkey_mask();
3466 }
3467
3468
3469 static int set_sig_umr_wr(struct ib_send_wr *send_wr, struct mlx5_ib_qp *qp,
3470                           void **seg, int *size)
3471 {
3472         struct ib_sig_handover_wr *wr = sig_handover_wr(send_wr);
3473         struct mlx5_ib_mr *sig_mr = to_mmr(wr->sig_mr);
3474         u32 pdn = get_pd(qp)->pdn;
3475         u32 klm_oct_size;
3476         int region_len, ret;
3477
3478         if (unlikely(wr->wr.num_sge != 1) ||
3479             unlikely(wr->access_flags & IB_ACCESS_REMOTE_ATOMIC) ||
3480             unlikely(!sig_mr->sig) || unlikely(!qp->signature_en) ||
3481             unlikely(!sig_mr->sig->sig_status_checked))
3482                 return -EINVAL;
3483
3484         /* length of the protected region, data + protection */
3485         region_len = wr->wr.sg_list->length;
3486         if (wr->prot &&
3487             (wr->prot->lkey != wr->wr.sg_list->lkey  ||
3488              wr->prot->addr != wr->wr.sg_list->addr  ||
3489              wr->prot->length != wr->wr.sg_list->length))
3490                 region_len += wr->prot->length;
3491
3492         /**
3493          * KLM octoword size - if protection was provided
3494          * then we use strided block format (3 octowords),
3495          * else we use single KLM (1 octoword)
3496          **/
3497         klm_oct_size = wr->prot ? 3 : 1;
3498
3499         set_sig_umr_segment(*seg, klm_oct_size);
3500         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
3501         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
3502         if (unlikely((*seg == qp->sq.qend)))
3503                 *seg = mlx5_get_send_wqe(qp, 0);
3504
3505         set_sig_mkey_segment(*seg, wr, klm_oct_size, region_len, pdn);
3506         *seg += sizeof(struct mlx5_mkey_seg);
3507         *size += sizeof(struct mlx5_mkey_seg) / 16;
3508         if (unlikely((*seg == qp->sq.qend)))
3509                 *seg = mlx5_get_send_wqe(qp, 0);
3510
3511         ret = set_sig_data_segment(wr, qp, seg, size);
3512         if (ret)
3513                 return ret;
3514
3515         sig_mr->sig->sig_status_checked = false;
3516         return 0;
3517 }
3518
3519 static int set_psv_wr(struct ib_sig_domain *domain,
3520                       u32 psv_idx, void **seg, int *size)
3521 {
3522         struct mlx5_seg_set_psv *psv_seg = *seg;
3523
3524         memset(psv_seg, 0, sizeof(*psv_seg));
3525         psv_seg->psv_num = cpu_to_be32(psv_idx);
3526         switch (domain->sig_type) {
3527         case IB_SIG_TYPE_NONE:
3528                 break;
3529         case IB_SIG_TYPE_T10_DIF:
3530                 psv_seg->transient_sig = cpu_to_be32(domain->sig.dif.bg << 16 |
3531                                                      domain->sig.dif.app_tag);
3532                 psv_seg->ref_tag = cpu_to_be32(domain->sig.dif.ref_tag);
3533                 break;
3534         default:
3535                 pr_err("Bad signature type given.\n");
3536                 return 1;
3537         }
3538
3539         *seg += sizeof(*psv_seg);
3540         *size += sizeof(*psv_seg) / 16;
3541
3542         return 0;
3543 }
3544
3545 static int set_reg_wr(struct mlx5_ib_qp *qp,
3546                       struct ib_reg_wr *wr,
3547                       void **seg, int *size)
3548 {
3549         struct mlx5_ib_mr *mr = to_mmr(wr->mr);
3550         struct mlx5_ib_pd *pd = to_mpd(qp->ibqp.pd);
3551
3552         if (unlikely(wr->wr.send_flags & IB_SEND_INLINE)) {
3553                 mlx5_ib_warn(to_mdev(qp->ibqp.device),
3554                              "Invalid IB_SEND_INLINE send flag\n");
3555                 return -EINVAL;
3556         }
3557
3558         set_reg_umr_seg(*seg, mr);
3559         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
3560         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
3561         if (unlikely((*seg == qp->sq.qend)))
3562                 *seg = mlx5_get_send_wqe(qp, 0);
3563
3564         set_reg_mkey_seg(*seg, mr, wr->key, wr->access);
3565         *seg += sizeof(struct mlx5_mkey_seg);
3566         *size += sizeof(struct mlx5_mkey_seg) / 16;
3567         if (unlikely((*seg == qp->sq.qend)))
3568                 *seg = mlx5_get_send_wqe(qp, 0);
3569
3570         set_reg_data_seg(*seg, mr, pd);
3571         *seg += sizeof(struct mlx5_wqe_data_seg);
3572         *size += (sizeof(struct mlx5_wqe_data_seg) / 16);
3573
3574         return 0;
3575 }
3576
3577 static void set_linv_wr(struct mlx5_ib_qp *qp, void **seg, int *size)
3578 {
3579         set_linv_umr_seg(*seg);
3580         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
3581         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
3582         if (unlikely((*seg == qp->sq.qend)))
3583                 *seg = mlx5_get_send_wqe(qp, 0);
3584         set_linv_mkey_seg(*seg);
3585         *seg += sizeof(struct mlx5_mkey_seg);
3586         *size += sizeof(struct mlx5_mkey_seg) / 16;
3587         if (unlikely((*seg == qp->sq.qend)))
3588                 *seg = mlx5_get_send_wqe(qp, 0);
3589 }
3590
3591 static void dump_wqe(struct mlx5_ib_qp *qp, int idx, int size_16)
3592 {
3593         __be32 *p = NULL;
3594         int tidx = idx;
3595         int i, j;
3596
3597         pr_debug("dump wqe at %p\n", mlx5_get_send_wqe(qp, tidx));
3598         for (i = 0, j = 0; i < size_16 * 4; i += 4, j += 4) {
3599                 if ((i & 0xf) == 0) {
3600                         void *buf = mlx5_get_send_wqe(qp, tidx);
3601                         tidx = (tidx + 1) & (qp->sq.wqe_cnt - 1);
3602                         p = buf;
3603                         j = 0;
3604                 }
3605                 pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p[j]),
3606                          be32_to_cpu(p[j + 1]), be32_to_cpu(p[j + 2]),
3607                          be32_to_cpu(p[j + 3]));
3608         }
3609 }
3610
3611 static void mlx5_bf_copy(u64 __iomem *dst, u64 *src,
3612                          unsigned bytecnt, struct mlx5_ib_qp *qp)
3613 {
3614         while (bytecnt > 0) {
3615                 __iowrite64_copy(dst++, src++, 8);
3616                 __iowrite64_copy(dst++, src++, 8);
3617                 __iowrite64_copy(dst++, src++, 8);
3618                 __iowrite64_copy(dst++, src++, 8);
3619                 __iowrite64_copy(dst++, src++, 8);
3620                 __iowrite64_copy(dst++, src++, 8);
3621                 __iowrite64_copy(dst++, src++, 8);
3622                 __iowrite64_copy(dst++, src++, 8);
3623                 bytecnt -= 64;
3624                 if (unlikely(src == qp->sq.qend))
3625                         src = mlx5_get_send_wqe(qp, 0);
3626         }
3627 }
3628
3629 static u8 get_fence(u8 fence, struct ib_send_wr *wr)
3630 {
3631         if (unlikely(wr->opcode == IB_WR_LOCAL_INV &&
3632                      wr->send_flags & IB_SEND_FENCE))
3633                 return MLX5_FENCE_MODE_STRONG_ORDERING;
3634
3635         if (unlikely(fence)) {
3636                 if (wr->send_flags & IB_SEND_FENCE)
3637                         return MLX5_FENCE_MODE_SMALL_AND_FENCE;
3638                 else
3639                         return fence;
3640
3641         } else {
3642                 return 0;
3643         }
3644 }
3645
3646 static int begin_wqe(struct mlx5_ib_qp *qp, void **seg,
3647                      struct mlx5_wqe_ctrl_seg **ctrl,
3648                      struct ib_send_wr *wr, unsigned *idx,
3649                      int *size, int nreq)
3650 {
3651         int err = 0;
3652
3653         if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq))) {
3654                 err = -ENOMEM;
3655                 return err;
3656         }
3657
3658         *idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1);
3659         *seg = mlx5_get_send_wqe(qp, *idx);
3660         *ctrl = *seg;
3661         *(uint32_t *)(*seg + 8) = 0;
3662         (*ctrl)->imm = send_ieth(wr);
3663         (*ctrl)->fm_ce_se = qp->sq_signal_bits |
3664                 (wr->send_flags & IB_SEND_SIGNALED ?
3665                  MLX5_WQE_CTRL_CQ_UPDATE : 0) |
3666                 (wr->send_flags & IB_SEND_SOLICITED ?
3667                  MLX5_WQE_CTRL_SOLICITED : 0);
3668
3669         *seg += sizeof(**ctrl);
3670         *size = sizeof(**ctrl) / 16;
3671
3672         return err;
3673 }
3674
3675 static void finish_wqe(struct mlx5_ib_qp *qp,
3676                        struct mlx5_wqe_ctrl_seg *ctrl,
3677                        u8 size, unsigned idx, u64 wr_id,
3678                        int nreq, u8 fence, u8 next_fence,
3679                        u32 mlx5_opcode)
3680 {
3681         u8 opmod = 0;
3682
3683         ctrl->opmod_idx_opcode = cpu_to_be32(((u32)(qp->sq.cur_post) << 8) |
3684                                              mlx5_opcode | ((u32)opmod << 24));
3685         ctrl->qpn_ds = cpu_to_be32(size | (qp->trans_qp.base.mqp.qpn << 8));
3686         ctrl->fm_ce_se |= fence;
3687         qp->fm_cache = next_fence;
3688         if (unlikely(qp->wq_sig))
3689                 ctrl->signature = wq_sig(ctrl);
3690
3691         qp->sq.wrid[idx] = wr_id;
3692         qp->sq.w_list[idx].opcode = mlx5_opcode;
3693         qp->sq.wqe_head[idx] = qp->sq.head + nreq;
3694         qp->sq.cur_post += DIV_ROUND_UP(size * 16, MLX5_SEND_WQE_BB);
3695         qp->sq.w_list[idx].next = qp->sq.cur_post;
3696 }
3697
3698
3699 int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
3700                       struct ib_send_wr **bad_wr)
3701 {
3702         struct mlx5_wqe_ctrl_seg *ctrl = NULL;  /* compiler warning */
3703         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3704         struct mlx5_core_dev *mdev = dev->mdev;
3705         struct mlx5_ib_qp *qp;
3706         struct mlx5_ib_mr *mr;
3707         struct mlx5_wqe_data_seg *dpseg;
3708         struct mlx5_wqe_xrc_seg *xrc;
3709         struct mlx5_bf *bf;
3710         int uninitialized_var(size);
3711         void *qend;
3712         unsigned long flags;
3713         unsigned idx;
3714         int err = 0;
3715         int inl = 0;
3716         int num_sge;
3717         void *seg;
3718         int nreq;
3719         int i;
3720         u8 next_fence = 0;
3721         u8 fence;
3722
3723         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
3724                 return mlx5_ib_gsi_post_send(ibqp, wr, bad_wr);
3725
3726         qp = to_mqp(ibqp);
3727         bf = qp->bf;
3728         qend = qp->sq.qend;
3729
3730         spin_lock_irqsave(&qp->sq.lock, flags);
3731
3732         if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
3733                 err = -EIO;
3734                 *bad_wr = wr;
3735                 nreq = 0;
3736                 goto out;
3737         }
3738
3739         for (nreq = 0; wr; nreq++, wr = wr->next) {
3740                 if (unlikely(wr->opcode >= ARRAY_SIZE(mlx5_ib_opcode))) {
3741                         mlx5_ib_warn(dev, "\n");
3742                         err = -EINVAL;
3743                         *bad_wr = wr;
3744                         goto out;
3745                 }
3746
3747                 fence = qp->fm_cache;
3748                 num_sge = wr->num_sge;
3749                 if (unlikely(num_sge > qp->sq.max_gs)) {
3750                         mlx5_ib_warn(dev, "\n");
3751                         err = -ENOMEM;
3752                         *bad_wr = wr;
3753                         goto out;
3754                 }
3755
3756                 err = begin_wqe(qp, &seg, &ctrl, wr, &idx, &size, nreq);
3757                 if (err) {
3758                         mlx5_ib_warn(dev, "\n");
3759                         err = -ENOMEM;
3760                         *bad_wr = wr;
3761                         goto out;
3762                 }
3763
3764                 switch (ibqp->qp_type) {
3765                 case IB_QPT_XRC_INI:
3766                         xrc = seg;
3767                         seg += sizeof(*xrc);
3768                         size += sizeof(*xrc) / 16;
3769                         /* fall through */
3770                 case IB_QPT_RC:
3771                         switch (wr->opcode) {
3772                         case IB_WR_RDMA_READ:
3773                         case IB_WR_RDMA_WRITE:
3774                         case IB_WR_RDMA_WRITE_WITH_IMM:
3775                                 set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
3776                                               rdma_wr(wr)->rkey);
3777                                 seg += sizeof(struct mlx5_wqe_raddr_seg);
3778                                 size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
3779                                 break;
3780
3781                         case IB_WR_ATOMIC_CMP_AND_SWP:
3782                         case IB_WR_ATOMIC_FETCH_AND_ADD:
3783                         case IB_WR_MASKED_ATOMIC_CMP_AND_SWP:
3784                                 mlx5_ib_warn(dev, "Atomic operations are not supported yet\n");
3785                                 err = -ENOSYS;
3786                                 *bad_wr = wr;
3787                                 goto out;
3788
3789                         case IB_WR_LOCAL_INV:
3790                                 next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
3791                                 qp->sq.wr_data[idx] = IB_WR_LOCAL_INV;
3792                                 ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey);
3793                                 set_linv_wr(qp, &seg, &size);
3794                                 num_sge = 0;
3795                                 break;
3796
3797                         case IB_WR_REG_MR:
3798                                 next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
3799                                 qp->sq.wr_data[idx] = IB_WR_REG_MR;
3800                                 ctrl->imm = cpu_to_be32(reg_wr(wr)->key);
3801                                 err = set_reg_wr(qp, reg_wr(wr), &seg, &size);
3802                                 if (err) {
3803                                         *bad_wr = wr;
3804                                         goto out;
3805                                 }
3806                                 num_sge = 0;
3807                                 break;
3808
3809                         case IB_WR_REG_SIG_MR:
3810                                 qp->sq.wr_data[idx] = IB_WR_REG_SIG_MR;
3811                                 mr = to_mmr(sig_handover_wr(wr)->sig_mr);
3812
3813                                 ctrl->imm = cpu_to_be32(mr->ibmr.rkey);
3814                                 err = set_sig_umr_wr(wr, qp, &seg, &size);
3815                                 if (err) {
3816                                         mlx5_ib_warn(dev, "\n");
3817                                         *bad_wr = wr;
3818                                         goto out;
3819                                 }
3820
3821                                 finish_wqe(qp, ctrl, size, idx, wr->wr_id,
3822                                            nreq, get_fence(fence, wr),
3823                                            next_fence, MLX5_OPCODE_UMR);
3824                                 /*
3825                                  * SET_PSV WQEs are not signaled and solicited
3826                                  * on error
3827                                  */
3828                                 wr->send_flags &= ~IB_SEND_SIGNALED;
3829                                 wr->send_flags |= IB_SEND_SOLICITED;
3830                                 err = begin_wqe(qp, &seg, &ctrl, wr,
3831                                                 &idx, &size, nreq);
3832                                 if (err) {
3833                                         mlx5_ib_warn(dev, "\n");
3834                                         err = -ENOMEM;
3835                                         *bad_wr = wr;
3836                                         goto out;
3837                                 }
3838
3839                                 err = set_psv_wr(&sig_handover_wr(wr)->sig_attrs->mem,
3840                                                  mr->sig->psv_memory.psv_idx, &seg,
3841                                                  &size);
3842                                 if (err) {
3843                                         mlx5_ib_warn(dev, "\n");
3844                                         *bad_wr = wr;
3845                                         goto out;
3846                                 }
3847
3848                                 finish_wqe(qp, ctrl, size, idx, wr->wr_id,
3849                                            nreq, get_fence(fence, wr),
3850                                            next_fence, MLX5_OPCODE_SET_PSV);
3851                                 err = begin_wqe(qp, &seg, &ctrl, wr,
3852                                                 &idx, &size, nreq);
3853                                 if (err) {
3854                                         mlx5_ib_warn(dev, "\n");
3855                                         err = -ENOMEM;
3856                                         *bad_wr = wr;
3857                                         goto out;
3858                                 }
3859
3860                                 next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
3861                                 err = set_psv_wr(&sig_handover_wr(wr)->sig_attrs->wire,
3862                                                  mr->sig->psv_wire.psv_idx, &seg,
3863                                                  &size);
3864                                 if (err) {
3865                                         mlx5_ib_warn(dev, "\n");
3866                                         *bad_wr = wr;
3867                                         goto out;
3868                                 }
3869
3870                                 finish_wqe(qp, ctrl, size, idx, wr->wr_id,
3871                                            nreq, get_fence(fence, wr),
3872                                            next_fence, MLX5_OPCODE_SET_PSV);
3873                                 num_sge = 0;
3874                                 goto skip_psv;
3875
3876                         default:
3877                                 break;
3878                         }
3879                         break;
3880
3881                 case IB_QPT_UC:
3882                         switch (wr->opcode) {
3883                         case IB_WR_RDMA_WRITE:
3884                         case IB_WR_RDMA_WRITE_WITH_IMM:
3885                                 set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
3886                                               rdma_wr(wr)->rkey);
3887                                 seg  += sizeof(struct mlx5_wqe_raddr_seg);
3888                                 size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
3889                                 break;
3890
3891                         default:
3892                                 break;
3893                         }
3894                         break;
3895
3896                 case IB_QPT_SMI:
3897                 case MLX5_IB_QPT_HW_GSI:
3898                         set_datagram_seg(seg, wr);
3899                         seg += sizeof(struct mlx5_wqe_datagram_seg);
3900                         size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
3901                         if (unlikely((seg == qend)))
3902                                 seg = mlx5_get_send_wqe(qp, 0);
3903                         break;
3904                 case IB_QPT_UD:
3905                         set_datagram_seg(seg, wr);
3906                         seg += sizeof(struct mlx5_wqe_datagram_seg);
3907                         size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
3908
3909                         if (unlikely((seg == qend)))
3910                                 seg = mlx5_get_send_wqe(qp, 0);
3911
3912                         /* handle qp that supports ud offload */
3913                         if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO) {
3914                                 struct mlx5_wqe_eth_pad *pad;
3915
3916                                 pad = seg;
3917                                 memset(pad, 0, sizeof(struct mlx5_wqe_eth_pad));
3918                                 seg += sizeof(struct mlx5_wqe_eth_pad);
3919                                 size += sizeof(struct mlx5_wqe_eth_pad) / 16;
3920
3921                                 seg = set_eth_seg(seg, wr, qend, qp, &size);
3922
3923                                 if (unlikely((seg == qend)))
3924                                         seg = mlx5_get_send_wqe(qp, 0);
3925                         }
3926                         break;
3927                 case MLX5_IB_QPT_REG_UMR:
3928                         if (wr->opcode != MLX5_IB_WR_UMR) {
3929                                 err = -EINVAL;
3930                                 mlx5_ib_warn(dev, "bad opcode\n");
3931                                 goto out;
3932                         }
3933                         qp->sq.wr_data[idx] = MLX5_IB_WR_UMR;
3934                         ctrl->imm = cpu_to_be32(umr_wr(wr)->mkey);
3935                         set_reg_umr_segment(seg, wr);
3936                         seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
3937                         size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
3938                         if (unlikely((seg == qend)))
3939                                 seg = mlx5_get_send_wqe(qp, 0);
3940                         set_reg_mkey_segment(seg, wr);
3941                         seg += sizeof(struct mlx5_mkey_seg);
3942                         size += sizeof(struct mlx5_mkey_seg) / 16;
3943                         if (unlikely((seg == qend)))
3944                                 seg = mlx5_get_send_wqe(qp, 0);
3945                         break;
3946
3947                 default:
3948                         break;
3949                 }
3950
3951                 if (wr->send_flags & IB_SEND_INLINE && num_sge) {
3952                         int uninitialized_var(sz);
3953
3954                         err = set_data_inl_seg(qp, wr, seg, &sz);
3955                         if (unlikely(err)) {
3956                                 mlx5_ib_warn(dev, "\n");
3957                                 *bad_wr = wr;
3958                                 goto out;
3959                         }
3960                         inl = 1;
3961                         size += sz;
3962                 } else {
3963                         dpseg = seg;
3964                         for (i = 0; i < num_sge; i++) {
3965                                 if (unlikely(dpseg == qend)) {
3966                                         seg = mlx5_get_send_wqe(qp, 0);
3967                                         dpseg = seg;
3968                                 }
3969                                 if (likely(wr->sg_list[i].length)) {
3970                                         set_data_ptr_seg(dpseg, wr->sg_list + i);
3971                                         size += sizeof(struct mlx5_wqe_data_seg) / 16;
3972                                         dpseg++;
3973                                 }
3974                         }
3975                 }
3976
3977                 finish_wqe(qp, ctrl, size, idx, wr->wr_id, nreq,
3978                            get_fence(fence, wr), next_fence,
3979                            mlx5_ib_opcode[wr->opcode]);
3980 skip_psv:
3981                 if (0)
3982                         dump_wqe(qp, idx, size);
3983         }
3984
3985 out:
3986         if (likely(nreq)) {
3987                 qp->sq.head += nreq;
3988
3989                 /* Make sure that descriptors are written before
3990                  * updating doorbell record and ringing the doorbell
3991                  */
3992                 wmb();
3993
3994                 qp->db.db[MLX5_SND_DBR] = cpu_to_be32(qp->sq.cur_post);
3995
3996                 /* Make sure doorbell record is visible to the HCA before
3997                  * we hit doorbell */
3998                 wmb();
3999
4000                 if (bf->need_lock)
4001                         spin_lock(&bf->lock);
4002                 else
4003                         __acquire(&bf->lock);
4004
4005                 /* TBD enable WC */
4006                 if (0 && nreq == 1 && bf->uuarn && inl && size > 1 && size <= bf->buf_size / 16) {
4007                         mlx5_bf_copy(bf->reg + bf->offset, (u64 *)ctrl, ALIGN(size * 16, 64), qp);
4008                         /* wc_wmb(); */
4009                 } else {
4010                         mlx5_write64((__be32 *)ctrl, bf->regreg + bf->offset,
4011                                      MLX5_GET_DOORBELL_LOCK(&bf->lock32));
4012                         /* Make sure doorbells don't leak out of SQ spinlock
4013                          * and reach the HCA out of order.
4014                          */
4015                         mmiowb();
4016                 }
4017                 bf->offset ^= bf->buf_size;
4018                 if (bf->need_lock)
4019                         spin_unlock(&bf->lock);
4020                 else
4021                         __release(&bf->lock);
4022         }
4023
4024         spin_unlock_irqrestore(&qp->sq.lock, flags);
4025
4026         return err;
4027 }
4028
4029 static void set_sig_seg(struct mlx5_rwqe_sig *sig, int size)
4030 {
4031         sig->signature = calc_sig(sig, size);
4032 }
4033
4034 int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
4035                       struct ib_recv_wr **bad_wr)
4036 {
4037         struct mlx5_ib_qp *qp = to_mqp(ibqp);
4038         struct mlx5_wqe_data_seg *scat;
4039         struct mlx5_rwqe_sig *sig;
4040         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4041         struct mlx5_core_dev *mdev = dev->mdev;
4042         unsigned long flags;
4043         int err = 0;
4044         int nreq;
4045         int ind;
4046         int i;
4047
4048         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4049                 return mlx5_ib_gsi_post_recv(ibqp, wr, bad_wr);
4050
4051         spin_lock_irqsave(&qp->rq.lock, flags);
4052
4053         if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
4054                 err = -EIO;
4055                 *bad_wr = wr;
4056                 nreq = 0;
4057                 goto out;
4058         }
4059
4060         ind = qp->rq.head & (qp->rq.wqe_cnt - 1);
4061
4062         for (nreq = 0; wr; nreq++, wr = wr->next) {
4063                 if (mlx5_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
4064                         err = -ENOMEM;
4065                         *bad_wr = wr;
4066                         goto out;
4067                 }
4068
4069                 if (unlikely(wr->num_sge > qp->rq.max_gs)) {
4070                         err = -EINVAL;
4071                         *bad_wr = wr;
4072                         goto out;
4073                 }
4074
4075                 scat = get_recv_wqe(qp, ind);
4076                 if (qp->wq_sig)
4077                         scat++;
4078
4079                 for (i = 0; i < wr->num_sge; i++)
4080                         set_data_ptr_seg(scat + i, wr->sg_list + i);
4081
4082                 if (i < qp->rq.max_gs) {
4083                         scat[i].byte_count = 0;
4084                         scat[i].lkey       = cpu_to_be32(MLX5_INVALID_LKEY);
4085                         scat[i].addr       = 0;
4086                 }
4087
4088                 if (qp->wq_sig) {
4089                         sig = (struct mlx5_rwqe_sig *)scat;
4090                         set_sig_seg(sig, (qp->rq.max_gs + 1) << 2);
4091                 }
4092
4093                 qp->rq.wrid[ind] = wr->wr_id;
4094
4095                 ind = (ind + 1) & (qp->rq.wqe_cnt - 1);
4096         }
4097
4098 out:
4099         if (likely(nreq)) {
4100                 qp->rq.head += nreq;
4101
4102                 /* Make sure that descriptors are written before
4103                  * doorbell record.
4104                  */
4105                 wmb();
4106
4107                 *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff);
4108         }
4109
4110         spin_unlock_irqrestore(&qp->rq.lock, flags);
4111
4112         return err;
4113 }
4114
4115 static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state)
4116 {
4117         switch (mlx5_state) {
4118         case MLX5_QP_STATE_RST:      return IB_QPS_RESET;
4119         case MLX5_QP_STATE_INIT:     return IB_QPS_INIT;
4120         case MLX5_QP_STATE_RTR:      return IB_QPS_RTR;
4121         case MLX5_QP_STATE_RTS:      return IB_QPS_RTS;
4122         case MLX5_QP_STATE_SQ_DRAINING:
4123         case MLX5_QP_STATE_SQD:      return IB_QPS_SQD;
4124         case MLX5_QP_STATE_SQER:     return IB_QPS_SQE;
4125         case MLX5_QP_STATE_ERR:      return IB_QPS_ERR;
4126         default:                     return -1;
4127         }
4128 }
4129
4130 static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state)
4131 {
4132         switch (mlx5_mig_state) {
4133         case MLX5_QP_PM_ARMED:          return IB_MIG_ARMED;
4134         case MLX5_QP_PM_REARM:          return IB_MIG_REARM;
4135         case MLX5_QP_PM_MIGRATED:       return IB_MIG_MIGRATED;
4136         default: return -1;
4137         }
4138 }
4139
4140 static int to_ib_qp_access_flags(int mlx5_flags)
4141 {
4142         int ib_flags = 0;
4143
4144         if (mlx5_flags & MLX5_QP_BIT_RRE)
4145                 ib_flags |= IB_ACCESS_REMOTE_READ;
4146         if (mlx5_flags & MLX5_QP_BIT_RWE)
4147                 ib_flags |= IB_ACCESS_REMOTE_WRITE;
4148         if (mlx5_flags & MLX5_QP_BIT_RAE)
4149                 ib_flags |= IB_ACCESS_REMOTE_ATOMIC;
4150
4151         return ib_flags;
4152 }
4153
4154 static void to_ib_ah_attr(struct mlx5_ib_dev *ibdev, struct ib_ah_attr *ib_ah_attr,
4155                                 struct mlx5_qp_path *path)
4156 {
4157         struct mlx5_core_dev *dev = ibdev->mdev;
4158
4159         memset(ib_ah_attr, 0, sizeof(*ib_ah_attr));
4160         ib_ah_attr->port_num      = path->port;
4161
4162         if (ib_ah_attr->port_num == 0 ||
4163             ib_ah_attr->port_num > MLX5_CAP_GEN(dev, num_ports))
4164                 return;
4165
4166         ib_ah_attr->sl = path->dci_cfi_prio_sl & 0xf;
4167
4168         ib_ah_attr->dlid          = be16_to_cpu(path->rlid);
4169         ib_ah_attr->src_path_bits = path->grh_mlid & 0x7f;
4170         ib_ah_attr->static_rate   = path->static_rate ? path->static_rate - 5 : 0;
4171         ib_ah_attr->ah_flags      = (path->grh_mlid & (1 << 7)) ? IB_AH_GRH : 0;
4172         if (ib_ah_attr->ah_flags) {
4173                 ib_ah_attr->grh.sgid_index = path->mgid_index;
4174                 ib_ah_attr->grh.hop_limit  = path->hop_limit;
4175                 ib_ah_attr->grh.traffic_class =
4176                         (be32_to_cpu(path->tclass_flowlabel) >> 20) & 0xff;
4177                 ib_ah_attr->grh.flow_label =
4178                         be32_to_cpu(path->tclass_flowlabel) & 0xfffff;
4179                 memcpy(ib_ah_attr->grh.dgid.raw,
4180                        path->rgid, sizeof(ib_ah_attr->grh.dgid.raw));
4181         }
4182 }
4183
4184 static int query_raw_packet_qp_sq_state(struct mlx5_ib_dev *dev,
4185                                         struct mlx5_ib_sq *sq,
4186                                         u8 *sq_state)
4187 {
4188         void *out;
4189         void *sqc;
4190         int inlen;
4191         int err;
4192
4193         inlen = MLX5_ST_SZ_BYTES(query_sq_out);
4194         out = mlx5_vzalloc(inlen);
4195         if (!out)
4196                 return -ENOMEM;
4197
4198         err = mlx5_core_query_sq(dev->mdev, sq->base.mqp.qpn, out);
4199         if (err)
4200                 goto out;
4201
4202         sqc = MLX5_ADDR_OF(query_sq_out, out, sq_context);
4203         *sq_state = MLX5_GET(sqc, sqc, state);
4204         sq->state = *sq_state;
4205
4206 out:
4207         kvfree(out);
4208         return err;
4209 }
4210
4211 static int query_raw_packet_qp_rq_state(struct mlx5_ib_dev *dev,
4212                                         struct mlx5_ib_rq *rq,
4213                                         u8 *rq_state)
4214 {
4215         void *out;
4216         void *rqc;
4217         int inlen;
4218         int err;
4219
4220         inlen = MLX5_ST_SZ_BYTES(query_rq_out);
4221         out = mlx5_vzalloc(inlen);
4222         if (!out)
4223                 return -ENOMEM;
4224
4225         err = mlx5_core_query_rq(dev->mdev, rq->base.mqp.qpn, out);
4226         if (err)
4227                 goto out;
4228
4229         rqc = MLX5_ADDR_OF(query_rq_out, out, rq_context);
4230         *rq_state = MLX5_GET(rqc, rqc, state);
4231         rq->state = *rq_state;
4232
4233 out:
4234         kvfree(out);
4235         return err;
4236 }
4237
4238 static int sqrq_state_to_qp_state(u8 sq_state, u8 rq_state,
4239                                   struct mlx5_ib_qp *qp, u8 *qp_state)
4240 {
4241         static const u8 sqrq_trans[MLX5_RQ_NUM_STATE][MLX5_SQ_NUM_STATE] = {
4242                 [MLX5_RQC_STATE_RST] = {
4243                         [MLX5_SQC_STATE_RST]    = IB_QPS_RESET,
4244                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE_BAD,
4245                         [MLX5_SQC_STATE_ERR]    = MLX5_QP_STATE_BAD,
4246                         [MLX5_SQ_STATE_NA]      = IB_QPS_RESET,
4247                 },
4248                 [MLX5_RQC_STATE_RDY] = {
4249                         [MLX5_SQC_STATE_RST]    = MLX5_QP_STATE_BAD,
4250                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE,
4251                         [MLX5_SQC_STATE_ERR]    = IB_QPS_SQE,
4252                         [MLX5_SQ_STATE_NA]      = MLX5_QP_STATE,
4253                 },
4254                 [MLX5_RQC_STATE_ERR] = {
4255                         [MLX5_SQC_STATE_RST]    = MLX5_QP_STATE_BAD,
4256                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE_BAD,
4257                         [MLX5_SQC_STATE_ERR]    = IB_QPS_ERR,
4258                         [MLX5_SQ_STATE_NA]      = IB_QPS_ERR,
4259                 },
4260                 [MLX5_RQ_STATE_NA] = {
4261                         [MLX5_SQC_STATE_RST]    = IB_QPS_RESET,
4262                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE,
4263                         [MLX5_SQC_STATE_ERR]    = MLX5_QP_STATE,
4264                         [MLX5_SQ_STATE_NA]      = MLX5_QP_STATE_BAD,
4265                 },
4266         };
4267
4268         *qp_state = sqrq_trans[rq_state][sq_state];
4269
4270         if (*qp_state == MLX5_QP_STATE_BAD) {
4271                 WARN(1, "Buggy Raw Packet QP state, SQ 0x%x state: 0x%x, RQ 0x%x state: 0x%x",
4272                      qp->raw_packet_qp.sq.base.mqp.qpn, sq_state,
4273                      qp->raw_packet_qp.rq.base.mqp.qpn, rq_state);
4274                 return -EINVAL;
4275         }
4276
4277         if (*qp_state == MLX5_QP_STATE)
4278                 *qp_state = qp->state;
4279
4280         return 0;
4281 }
4282
4283 static int query_raw_packet_qp_state(struct mlx5_ib_dev *dev,
4284                                      struct mlx5_ib_qp *qp,
4285                                      u8 *raw_packet_qp_state)
4286 {
4287         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
4288         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
4289         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
4290         int err;
4291         u8 sq_state = MLX5_SQ_STATE_NA;
4292         u8 rq_state = MLX5_RQ_STATE_NA;
4293
4294         if (qp->sq.wqe_cnt) {
4295                 err = query_raw_packet_qp_sq_state(dev, sq, &sq_state);
4296                 if (err)
4297                         return err;
4298         }
4299
4300         if (qp->rq.wqe_cnt) {
4301                 err = query_raw_packet_qp_rq_state(dev, rq, &rq_state);
4302                 if (err)
4303                         return err;
4304         }
4305
4306         return sqrq_state_to_qp_state(sq_state, rq_state, qp,
4307                                       raw_packet_qp_state);
4308 }
4309
4310 static int query_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
4311                          struct ib_qp_attr *qp_attr)
4312 {
4313         struct mlx5_query_qp_mbox_out *outb;
4314         struct mlx5_qp_context *context;
4315         int mlx5_state;
4316         int err = 0;
4317
4318         outb = kzalloc(sizeof(*outb), GFP_KERNEL);
4319         if (!outb)
4320                 return -ENOMEM;
4321
4322         context = &outb->ctx;
4323         err = mlx5_core_qp_query(dev->mdev, &qp->trans_qp.base.mqp, outb,
4324                                  sizeof(*outb));
4325         if (err)
4326                 goto out;
4327
4328         mlx5_state = be32_to_cpu(context->flags) >> 28;
4329
4330         qp->state                    = to_ib_qp_state(mlx5_state);
4331         qp_attr->path_mtu            = context->mtu_msgmax >> 5;
4332         qp_attr->path_mig_state      =
4333                 to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3);
4334         qp_attr->qkey                = be32_to_cpu(context->qkey);
4335         qp_attr->rq_psn              = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff;
4336         qp_attr->sq_psn              = be32_to_cpu(context->next_send_psn) & 0xffffff;
4337         qp_attr->dest_qp_num         = be32_to_cpu(context->log_pg_sz_remote_qpn) & 0xffffff;
4338         qp_attr->qp_access_flags     =
4339                 to_ib_qp_access_flags(be32_to_cpu(context->params2));
4340
4341         if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) {
4342                 to_ib_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path);
4343                 to_ib_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path);
4344                 qp_attr->alt_pkey_index =
4345                         be16_to_cpu(context->alt_path.pkey_index);
4346                 qp_attr->alt_port_num   = qp_attr->alt_ah_attr.port_num;
4347         }
4348
4349         qp_attr->pkey_index = be16_to_cpu(context->pri_path.pkey_index);
4350         qp_attr->port_num = context->pri_path.port;
4351
4352         /* qp_attr->en_sqd_async_notify is only applicable in modify qp */
4353         qp_attr->sq_draining = mlx5_state == MLX5_QP_STATE_SQ_DRAINING;
4354
4355         qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7);
4356
4357         qp_attr->max_dest_rd_atomic =
4358                 1 << ((be32_to_cpu(context->params2) >> 21) & 0x7);
4359         qp_attr->min_rnr_timer      =
4360                 (be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f;
4361         qp_attr->timeout            = context->pri_path.ackto_lt >> 3;
4362         qp_attr->retry_cnt          = (be32_to_cpu(context->params1) >> 16) & 0x7;
4363         qp_attr->rnr_retry          = (be32_to_cpu(context->params1) >> 13) & 0x7;
4364         qp_attr->alt_timeout        = context->alt_path.ackto_lt >> 3;
4365
4366 out:
4367         kfree(outb);
4368         return err;
4369 }
4370
4371 int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
4372                      int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
4373 {
4374         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4375         struct mlx5_ib_qp *qp = to_mqp(ibqp);
4376         int err = 0;
4377         u8 raw_packet_qp_state;
4378
4379         if (ibqp->rwq_ind_tbl)
4380                 return -ENOSYS;
4381
4382         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4383                 return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
4384                                             qp_init_attr);
4385
4386 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
4387         /*
4388          * Wait for any outstanding page faults, in case the user frees memory
4389          * based upon this query's result.
4390          */
4391         flush_workqueue(mlx5_ib_page_fault_wq);
4392 #endif
4393
4394         mutex_lock(&qp->mutex);
4395
4396         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
4397                 err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state);
4398                 if (err)
4399                         goto out;
4400                 qp->state = raw_packet_qp_state;
4401                 qp_attr->port_num = 1;
4402         } else {
4403                 err = query_qp_attr(dev, qp, qp_attr);
4404                 if (err)
4405                         goto out;
4406         }
4407
4408         qp_attr->qp_state            = qp->state;
4409         qp_attr->cur_qp_state        = qp_attr->qp_state;
4410         qp_attr->cap.max_recv_wr     = qp->rq.wqe_cnt;
4411         qp_attr->cap.max_recv_sge    = qp->rq.max_gs;
4412
4413         if (!ibqp->uobject) {
4414                 qp_attr->cap.max_send_wr  = qp->sq.max_post;
4415                 qp_attr->cap.max_send_sge = qp->sq.max_gs;
4416                 qp_init_attr->qp_context = ibqp->qp_context;
4417         } else {
4418                 qp_attr->cap.max_send_wr  = 0;
4419                 qp_attr->cap.max_send_sge = 0;
4420         }
4421
4422         qp_init_attr->qp_type = ibqp->qp_type;
4423         qp_init_attr->recv_cq = ibqp->recv_cq;
4424         qp_init_attr->send_cq = ibqp->send_cq;
4425         qp_init_attr->srq = ibqp->srq;
4426         qp_attr->cap.max_inline_data = qp->max_inline_data;
4427
4428         qp_init_attr->cap            = qp_attr->cap;
4429
4430         qp_init_attr->create_flags = 0;
4431         if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
4432                 qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
4433
4434         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
4435                 qp_init_attr->create_flags |= IB_QP_CREATE_CROSS_CHANNEL;
4436         if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
4437                 qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_SEND;
4438         if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
4439                 qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_RECV;
4440         if (qp->flags & MLX5_IB_QP_SQPN_QP1)
4441                 qp_init_attr->create_flags |= mlx5_ib_create_qp_sqpn_qp1();
4442
4443         qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
4444                 IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
4445
4446 out:
4447         mutex_unlock(&qp->mutex);
4448         return err;
4449 }
4450
4451 struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
4452                                           struct ib_ucontext *context,
4453                                           struct ib_udata *udata)
4454 {
4455         struct mlx5_ib_dev *dev = to_mdev(ibdev);
4456         struct mlx5_ib_xrcd *xrcd;
4457         int err;
4458
4459         if (!MLX5_CAP_GEN(dev->mdev, xrc))
4460                 return ERR_PTR(-ENOSYS);
4461
4462         xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL);
4463         if (!xrcd)
4464                 return ERR_PTR(-ENOMEM);
4465
4466         err = mlx5_core_xrcd_alloc(dev->mdev, &xrcd->xrcdn);
4467         if (err) {
4468                 kfree(xrcd);
4469                 return ERR_PTR(-ENOMEM);
4470         }
4471
4472         return &xrcd->ibxrcd;
4473 }
4474
4475 int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
4476 {
4477         struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
4478         u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
4479         int err;
4480
4481         err = mlx5_core_xrcd_dealloc(dev->mdev, xrcdn);
4482         if (err) {
4483                 mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);
4484                 return err;
4485         }
4486
4487         kfree(xrcd);
4488
4489         return 0;
4490 }
4491
4492 static int  create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
4493                       struct ib_wq_init_attr *init_attr)
4494 {
4495         struct mlx5_ib_dev *dev;
4496         __be64 *rq_pas0;
4497         void *in;
4498         void *rqc;
4499         void *wq;
4500         int inlen;
4501         int err;
4502
4503         dev = to_mdev(pd->device);
4504
4505         inlen = MLX5_ST_SZ_BYTES(create_rq_in) + sizeof(u64) * rwq->rq_num_pas;
4506         in = mlx5_vzalloc(inlen);
4507         if (!in)
4508                 return -ENOMEM;
4509
4510         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
4511         MLX5_SET(rqc,  rqc, mem_rq_type,
4512                  MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
4513         MLX5_SET(rqc, rqc, user_index, rwq->user_index);
4514         MLX5_SET(rqc,  rqc, cqn, to_mcq(init_attr->cq)->mcq.cqn);
4515         MLX5_SET(rqc,  rqc, state, MLX5_RQC_STATE_RST);
4516         MLX5_SET(rqc,  rqc, flush_in_error_en, 1);
4517         wq = MLX5_ADDR_OF(rqc, rqc, wq);
4518         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
4519         MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
4520         MLX5_SET(wq, wq, log_wq_stride, rwq->log_rq_stride);
4521         MLX5_SET(wq, wq, log_wq_sz, rwq->log_rq_size);
4522         MLX5_SET(wq, wq, pd, to_mpd(pd)->pdn);
4523         MLX5_SET(wq, wq, page_offset, rwq->rq_page_offset);
4524         MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size);
4525         MLX5_SET(wq, wq, wq_signature, rwq->wq_sig);
4526         MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma);
4527         rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
4528         mlx5_ib_populate_pas(dev, rwq->umem, rwq->page_shift, rq_pas0, 0);
4529         err = mlx5_core_create_rq(dev->mdev, in, inlen, &rwq->rqn);
4530         kvfree(in);
4531         return err;
4532 }
4533
4534 static int set_user_rq_size(struct mlx5_ib_dev *dev,
4535                             struct ib_wq_init_attr *wq_init_attr,
4536                             struct mlx5_ib_create_wq *ucmd,
4537                             struct mlx5_ib_rwq *rwq)
4538 {
4539         /* Sanity check RQ size before proceeding */
4540         if (wq_init_attr->max_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_wq_sz)))
4541                 return -EINVAL;
4542
4543         if (!ucmd->rq_wqe_count)
4544                 return -EINVAL;
4545
4546         rwq->wqe_count = ucmd->rq_wqe_count;
4547         rwq->wqe_shift = ucmd->rq_wqe_shift;
4548         rwq->buf_size = (rwq->wqe_count << rwq->wqe_shift);
4549         rwq->log_rq_stride = rwq->wqe_shift;
4550         rwq->log_rq_size = ilog2(rwq->wqe_count);
4551         return 0;
4552 }
4553
4554 static int prepare_user_rq(struct ib_pd *pd,
4555                            struct ib_wq_init_attr *init_attr,
4556                            struct ib_udata *udata,
4557                            struct mlx5_ib_rwq *rwq)
4558 {
4559         struct mlx5_ib_dev *dev = to_mdev(pd->device);
4560         struct mlx5_ib_create_wq ucmd = {};
4561         int err;
4562         size_t required_cmd_sz;
4563
4564         required_cmd_sz = offsetof(typeof(ucmd), reserved) + sizeof(ucmd.reserved);
4565         if (udata->inlen < required_cmd_sz) {
4566                 mlx5_ib_dbg(dev, "invalid inlen\n");
4567                 return -EINVAL;
4568         }
4569
4570         if (udata->inlen > sizeof(ucmd) &&
4571             !ib_is_udata_cleared(udata, sizeof(ucmd),
4572                                  udata->inlen - sizeof(ucmd))) {
4573                 mlx5_ib_dbg(dev, "inlen is not supported\n");
4574                 return -EOPNOTSUPP;
4575         }
4576
4577         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
4578                 mlx5_ib_dbg(dev, "copy failed\n");
4579                 return -EFAULT;
4580         }
4581
4582         if (ucmd.comp_mask) {
4583                 mlx5_ib_dbg(dev, "invalid comp mask\n");
4584                 return -EOPNOTSUPP;
4585         }
4586
4587         if (ucmd.reserved) {
4588                 mlx5_ib_dbg(dev, "invalid reserved\n");
4589                 return -EOPNOTSUPP;
4590         }
4591
4592         err = set_user_rq_size(dev, init_attr, &ucmd, rwq);
4593         if (err) {
4594                 mlx5_ib_dbg(dev, "err %d\n", err);
4595                 return err;
4596         }
4597
4598         err = create_user_rq(dev, pd, rwq, &ucmd);
4599         if (err) {
4600                 mlx5_ib_dbg(dev, "err %d\n", err);
4601                 if (err)
4602                         return err;
4603         }
4604
4605         rwq->user_index = ucmd.user_index;
4606         return 0;
4607 }
4608
4609 struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
4610                                 struct ib_wq_init_attr *init_attr,
4611                                 struct ib_udata *udata)
4612 {
4613         struct mlx5_ib_dev *dev;
4614         struct mlx5_ib_rwq *rwq;
4615         struct mlx5_ib_create_wq_resp resp = {};
4616         size_t min_resp_len;
4617         int err;
4618
4619         if (!udata)
4620                 return ERR_PTR(-ENOSYS);
4621
4622         min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
4623         if (udata->outlen && udata->outlen < min_resp_len)
4624                 return ERR_PTR(-EINVAL);
4625
4626         dev = to_mdev(pd->device);
4627         switch (init_attr->wq_type) {
4628         case IB_WQT_RQ:
4629                 rwq = kzalloc(sizeof(*rwq), GFP_KERNEL);
4630                 if (!rwq)
4631                         return ERR_PTR(-ENOMEM);
4632                 err = prepare_user_rq(pd, init_attr, udata, rwq);
4633                 if (err)
4634                         goto err;
4635                 err = create_rq(rwq, pd, init_attr);
4636                 if (err)
4637                         goto err_user_rq;
4638                 break;
4639         default:
4640                 mlx5_ib_dbg(dev, "unsupported wq type %d\n",
4641                             init_attr->wq_type);
4642                 return ERR_PTR(-EINVAL);
4643         }
4644
4645         rwq->ibwq.wq_num = rwq->rqn;
4646         rwq->ibwq.state = IB_WQS_RESET;
4647         if (udata->outlen) {
4648                 resp.response_length = offsetof(typeof(resp), response_length) +
4649                                 sizeof(resp.response_length);
4650                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
4651                 if (err)
4652                         goto err_copy;
4653         }
4654
4655         return &rwq->ibwq;
4656
4657 err_copy:
4658         mlx5_core_destroy_rq(dev->mdev, rwq->rqn);
4659 err_user_rq:
4660         destroy_user_rq(pd, rwq);
4661 err:
4662         kfree(rwq);
4663         return ERR_PTR(err);
4664 }
4665
4666 int mlx5_ib_destroy_wq(struct ib_wq *wq)
4667 {
4668         struct mlx5_ib_dev *dev = to_mdev(wq->device);
4669         struct mlx5_ib_rwq *rwq = to_mrwq(wq);
4670
4671         mlx5_core_destroy_rq(dev->mdev, rwq->rqn);
4672         destroy_user_rq(wq->pd, rwq);
4673         kfree(rwq);
4674
4675         return 0;
4676 }
4677
4678 struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
4679                                                       struct ib_rwq_ind_table_init_attr *init_attr,
4680                                                       struct ib_udata *udata)
4681 {
4682         struct mlx5_ib_dev *dev = to_mdev(device);
4683         struct mlx5_ib_rwq_ind_table *rwq_ind_tbl;
4684         int sz = 1 << init_attr->log_ind_tbl_size;
4685         struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
4686         size_t min_resp_len;
4687         int inlen;
4688         int err;
4689         int i;
4690         u32 *in;
4691         void *rqtc;
4692
4693         if (udata->inlen > 0 &&
4694             !ib_is_udata_cleared(udata, 0,
4695                                  udata->inlen))
4696                 return ERR_PTR(-EOPNOTSUPP);
4697
4698         min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
4699         if (udata->outlen && udata->outlen < min_resp_len)
4700                 return ERR_PTR(-EINVAL);
4701
4702         rwq_ind_tbl = kzalloc(sizeof(*rwq_ind_tbl), GFP_KERNEL);
4703         if (!rwq_ind_tbl)
4704                 return ERR_PTR(-ENOMEM);
4705
4706         inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
4707         in = mlx5_vzalloc(inlen);
4708         if (!in) {
4709                 err = -ENOMEM;
4710                 goto err;
4711         }
4712
4713         rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
4714
4715         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
4716         MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
4717
4718         for (i = 0; i < sz; i++)
4719                 MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);
4720
4721         err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
4722         kvfree(in);
4723
4724         if (err)
4725                 goto err;
4726
4727         rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
4728         if (udata->outlen) {
4729                 resp.response_length = offsetof(typeof(resp), response_length) +
4730                                         sizeof(resp.response_length);
4731                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
4732                 if (err)
4733                         goto err_copy;
4734         }
4735
4736         return &rwq_ind_tbl->ib_rwq_ind_tbl;
4737
4738 err_copy:
4739         mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
4740 err:
4741         kfree(rwq_ind_tbl);
4742         return ERR_PTR(err);
4743 }
4744
4745 int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
4746 {
4747         struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl);
4748         struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device);
4749
4750         mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
4751
4752         kfree(rwq_ind_tbl);
4753         return 0;
4754 }
4755
4756 int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
4757                       u32 wq_attr_mask, struct ib_udata *udata)
4758 {
4759         struct mlx5_ib_dev *dev = to_mdev(wq->device);
4760         struct mlx5_ib_rwq *rwq = to_mrwq(wq);
4761         struct mlx5_ib_modify_wq ucmd = {};
4762         size_t required_cmd_sz;
4763         int curr_wq_state;
4764         int wq_state;
4765         int inlen;
4766         int err;
4767         void *rqc;
4768         void *in;
4769
4770         required_cmd_sz = offsetof(typeof(ucmd), reserved) + sizeof(ucmd.reserved);
4771         if (udata->inlen < required_cmd_sz)
4772                 return -EINVAL;
4773
4774         if (udata->inlen > sizeof(ucmd) &&
4775             !ib_is_udata_cleared(udata, sizeof(ucmd),
4776                                  udata->inlen - sizeof(ucmd)))
4777                 return -EOPNOTSUPP;
4778
4779         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen)))
4780                 return -EFAULT;
4781
4782         if (ucmd.comp_mask || ucmd.reserved)
4783                 return -EOPNOTSUPP;
4784
4785         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
4786         in = mlx5_vzalloc(inlen);
4787         if (!in)
4788                 return -ENOMEM;
4789
4790         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
4791
4792         curr_wq_state = (wq_attr_mask & IB_WQ_CUR_STATE) ?
4793                 wq_attr->curr_wq_state : wq->state;
4794         wq_state = (wq_attr_mask & IB_WQ_STATE) ?
4795                 wq_attr->wq_state : curr_wq_state;
4796         if (curr_wq_state == IB_WQS_ERR)
4797                 curr_wq_state = MLX5_RQC_STATE_ERR;
4798         if (wq_state == IB_WQS_ERR)
4799                 wq_state = MLX5_RQC_STATE_ERR;
4800         MLX5_SET(modify_rq_in, in, rq_state, curr_wq_state);
4801         MLX5_SET(rqc, rqc, state, wq_state);
4802
4803         err = mlx5_core_modify_rq(dev->mdev, rwq->rqn, in, inlen);
4804         kvfree(in);
4805         if (!err)
4806                 rwq->ibwq.state = (wq_state == MLX5_RQC_STATE_ERR) ? IB_WQS_ERR : wq_state;
4807
4808         return err;
4809 }